AFC0060
Written evidence submitted by Mr David Rimmington.
Introduction
This submission is respectfully presented by David Rimmington, a former British Army Warrant Officer of the Royal Logistic Corps with over 24years’ service within the All Arms Sector, including Operational deployments in the Balkans and Sierra Leone, with 1 Para Battle Group. Having been awarded the British Army’s Long Service and Good Conduct medal and discharged with exemplary, loyal service; I am submitting this evidence both as a chronic sufferer, and on behalf of those struggling veterans unable to write today, highlighting the significant issue and prejudice faced by veterans, particularly in the area of screening and valid assessment of the neurotoxic effects of Mefloquine (Lariam) and other Acquired Brain Injuries (ABI) when presenting military mental health.
Having featured in The Daily Telegraph in 02 March 2024[1] and presented to the International Trauma-Informed Care Network dated 12 November 2021[2] in which I told of my ‘lived experience’ to 450+ NHS clinicians, Veteran health service providers, Service charities, and other eminent speakers, I, along with many other long suffering veterans continue to be failed by the Armed Forces Covenant’s moral obligation to members of the Armed Forces Community in return for the sacrifices they make, and its failure to uphold the Covenant’s two core principles[3]:
“No disadvantage: no current or former member of the armed forces, or their families, should be at a disadvantage compared to other citizens in the provision of public and commercial services.”
“Special consideration: special consideration is appropriate in some cases, particularly for those who have been injured or bereaved.”
Executive Summary
This submission highlights critical failings within the Armed Forces Covenant in its treatment of veterans suffering from the neurotoxic effects of Mefloquine (Lariam) and Acquired Brain Injuries (ABI). Drawing from personal experience and the struggles of fellow veterans, it underscores the systemic neglect, misdiagnosis, and lack of appropriate support these individuals face. The submission outlines the failure to properly screen, diagnose, and treat these conditions within UK veteran services, despite extensive international evidence and reports, including from the European Medicines Agency and the Australian Royal Commission into Defence Veterans Suicides. It also highlights the detrimental impact of commercial interests, misinformation, and conflicts of interest within research and veteran service organisations, leading to widespread disadvantage, sanctuary trauma[1], and the erosion of the Covenant’s core principles. Inadequate training for clinicians, lack of public awareness, and the persistent dismissal of veterans’ concerns are contributing to a vicious cycle of harm. This submission calls for the immediate recognition of Mefloquine toxicity and ABI as service-related injuries, alongside urgent reforms to provide veterans with the care and support they are legally and morally entitled to under the Armed Forces Covenant.
BACKGROUND
The opportunity to contribute to Defence Select Committee, is extremely timely given the recent final report from the Australian Royal Commission into Defence Veterans Suicides, especially Volume 4: Health care for serving and ex-serving members, recommendation 61[4], and replicates the same disadvantages experienced by UK Veterans:
“Recommendation 61: Establish a brain injury program.
Defence and the Department of Veterans’ Affairs should establish a brain injury program that covers, at a minimum, relevant Army corps, special forces, Navy clearance divers, Air Force combat controllers, and serving and ex-serving members exposed to mefloquine and/or tafenoquine. The program should:
(a) aim to better understand, and mitigate, the impact of repetitive low-level blast exposure on brain processes
(b) assess and treat neurocognitive issues affecting serving and ex-serving members, whatever their cause.
To do this, it should:
(c) monitor and assess environmental exposure to blast overpressure
(d) record members’ exposure to traumatic brain injury and minor traumatic brain injury, including in medical records
(e) establish a neurocognitive program suitable for serving and ex-serving members experiencing a range of neurocognitive issues, whatever their cause. This could be adapted from the former ‘Mending Military Minds’ program.
(f) provide referral pathways for further medical assessment, when required.
On 10th May 2023, I was honoured to serve as the sole veteran representative at the All-Party Parliamentary Group on Acquired Brain Injury reception[5]. At this significant event, I briefed Members of Parliament and other key personnel on veteran brain injury solutions using the Australian ‘Mending Military Minds’ initiative as a model. To support this presentation, I provided prepared A5 leaflets[6]. outlining the proposed solutions. It is worth highlighting that my presence as the only veteran at such a critical event underscores a broader issue: the relatively low engagement with veteran-specific brain injury matters compared to the attention given to veteran mental health events. Notably, my own MP for Grantham and Bourne failed to attend the reception. Nevertheless, I proactively arranged a one-to-one session with the former Minister of State for Veterans' Affairs, during which the newly forming OP RESTORE initiative was discussed. The Minister identified OP RESTORE as the necessary solution to address veteran-acquired brain injuries, particularly those associated with Mefloquine. This promise has been found to be false, having tried to assist other struggling veterans with GP referrals, as evidenced in an email reply from OP RESTORE on 14 June 2024[7].
“I can confirm that we do not have any referral route to support with the GP request RE: Mefloquine (Lariam)”
This was later clarified by Head of Armed Forces Policy and Operations, in a response dated 04 October 2024[8]
“We have made some enquiries and can advise that unfortunately there is no specific test or set of investigations which could diagnose the circumstances you have set out. Any diagnosis would be a clinical judgement based on symptoms, probability and likely cause and effect.”
The Mefloquine Single Point of Contact, published on 30 August 2016[9], claims to take “the health and well-being of its personnel seriously and acknowledges its duty of care to provide the best possible support to them.” However, it continues to serve merely as a signpost to nowhere, offering little more than empty promises.
In my case, not only did the Unit Medical Officer dismiss the reporting of adverse events from Mefloquine toxicity immediately upon returning from operations in 2000, but it also contributed to the induced suicide ideation and the completely out-of-character attempt on my own life. Further opportunities were missed by DCMH and Unit Medical Officers while serving, I was given a default PTSD diagnosis in an instant by civilian mental health services, simply for mentioning that I am a veteran. The resilience required to continue ‘fighting through’ this toxin-induced encephalopathy still takes its toll, and I am yet to be supported by those meant to help. During a meeting with the Deputy Director of a National Health Service Foundation Trust to explore a way forward, I was told that the toxicity of Lariam was “very interesting,” but that PTSD brought in significant funding, which seemed to redefine the concept of Duty of Candour. Ask yourself: how many UK veteran charities and clinical services include Lariam toxicity or Acquired Brain Injury in their literature, or on their websites[10]?
I have been vilified by Veteran UK at Tribunal, resulting in the withdrawal of my War Pension Tribunal case[11]. Even when Veteran UK finally recognises the side effects of Mefloquine in a War Pension claim[12]—entitling veterans to free prescriptions, aids, and appliances from the NHS—there is still no available support or provision. I have been repeatedly dismissed by untrained GPs and psychiatrists[13] while trying to find my own way forward, yet continually sent back to square one, even by doctors in Tropical Medicine[14] and civilian neurologists[15] —even when they agree on the root cause.
After sharing a mash-up video[16] on Veteran Brain Injury and Lariam toxicity, which subsequently contributed to evidence presented to the Defence Select Committee follow-up on Armed Forces and veterans' mental health on 12 January 2021[17], I engaged via social media with the UK's Independent Veterans Advisor to Ministers[18] in an attempt to seek assistance:
”I have to confess this one [Lariam Toxicity] slipped through the cracks.”
“In essence, the research we have looked at does not support the view that Lariam is a significant cause of long-term MH Problems for many people. It may be for a few but not many.”
“In terms of mTBI what we have seen suggests much the same; It’s a problem for a small number but not many. None of this means that the small numbers these conditions do affect should be ignored.”
His views on these Veteran injuries might not be as 'independent' as his title suggests. How can it be determined this only affects a few, if clinicians and veteran services are not screening or validly assessing soldiers and veterans for Lariam toxicity or acquired brain injury when veterans present veteran mental health symptoms? If current research doesn't support Lariam as a significant cause of long-term mental health issues, despite the European Medicine Agency’s Pharmacovigilance Risk Assessment Committee (PRAC) report conclusions, dated January 2014[19], what alternative studies or expert opinions are guiding the current stance, and who are the key advisors influencing this perspective? Moreover, the small numbers of affected veterans who have raised these concerns have been consistently ignored and disadvantaged.
Following a social media post, engagement was made with the Veterans’ Commissioner for Wales. Despite presenting verified facts and credible evidence on Mefloquine (Lariam) toxicity, the Commissioner defaulted to the House of Commons Defence Select Committee (DSC) report, which notably omitted the conclusions of the European Medicine Agency’s (PRAC) report. The Commissioner’s reluctance to thoroughly analyse the information and his initial dismissal was disappointing[20].
“The issue is that it has not been raised once to me by Welsh Veterans in my 11 months as Commissioner. Get a Welsh Vet that is affected to contact me about it and I will see what I can do.”
“Yeah, but do you really want to get into a blame game?”
“The med is not being issued unless as last resort (which means it isn’t)”
“Well, if you trace culpability back it's the drug company Roche who are responsible. But Lariam is still available and listed as an antimalarial which suggests that there is not enough evidence to get it banned.”
“The problem is that the culpability chain runs right through, govt, MoD, the services , to formations, units, MOs, medics to the users immediate CoC and the individual. You continued to take it despite the side effects, if you told your SNCO or Pl Comd they did nothing, the medics did nothing etc. It's a group dynamic inertia kind of thing. Meanwhile in 80s & 90s MoD has large stocks of a drug that is much cheaper than alternatives and there is effectively only anecdotal evidence that there are problems and Roche, and advisors say it's safe.”
Even after attempts to educate the Commissioner on this hidden and unpopular issue, no forward action was taken to acknowledge, help, or support affected veterans. What hope would a Private soldier have, particularly if they had already been misdiagnosed and mistreated, if they approached the Commissioner to raise concerns about Lariam and its adverse events? This raises significant questions about the Defence Select Committee (DSC) findings, which appear to have fostered manufactured doubt about the effects of Lariam, resulting in misleading support and deflecting crucial assistance for those impacted.
In a letter from the CEO of Combat Stress, dated 08 December 2016[21], it was acknowledged that they were aware of the adverse events associated with Lariam. But by not specifically screening for Mefloquine use, despite its known neurotoxic effects, veterans are at a disadvantage when seeking appropriate care for conditions caused by this medication. The lack of awareness or recognition of Mefloquine’s role in mental health issues, combined with the fact that many veterans may not even realise they have taken it, undermines the duty of care owed to them. Further evidence of these concerns is highlighted in a letter from COMBAT STRESS’s Director of Medical Services, dated 12 March 2018[22].
“Bearing in mind we had just under 2,500 referrals last year, between us we have seen approximately seven individuals who though they may or may not have mefloquine toxicity.”
In December 2014, during a particularly difficult period of neuropsychiatric events, I reached out to COMBAT STRESS in a desperate state and was assigned the very same Director of Medical Services. Despite their prior awareness of the issues surrounding Mefloquine toxicity, at no point during our subsequent conversations did they inquire about my potential exposure to the drug. This glaring omission highlights a critical failure in service consistency and a concerning lack of education within veteran support services. Such oversight not only undermines trust but also effectively denies veterans the comprehensive care they are entitled to under the Armed Forces Covenant. The failure to consider Mefloquine toxicity contributes to misdiagnosis, delays appropriate treatment, and ultimately places veterans at further risk of harm.
The Chair of the NHS England Armed Forces and their Families Clinical Reference Group, and the Royal College of General Practitioners (RCGP), was instrumental in establishing the OP COURAGE Veteran Mental Health Service but appears notably selective in the 'military mental health research' utilised to shape veteran services. When directly questioned, he has consistently avoided addressing Lariam toxicity or other forms of Acquired Brain Injury. In a House of Commons Select Committee hearing he remained conspicuously silent when an eminent professor detailed the parallels between Acquired Brain Injury and PTSD in Veterans[23]. Furthermore, as overseer of the RCGP Veteran Friendly accreditation for GPs[24] no awareness or clinical training material was included on Mefloquine (Lariam) toxicity and other Acquired Brain Injuries in the packs sent or presented online. His failure to uphold a Duty of Candour has resulted in misguided clinical education, misdiagnosis, mistreatment, and inadequate referrals for veterans suffering from Lariam toxicity, thereby deepening their struggles and health issues, despite claims below
“The NHS Op COURAGE service is unique – our staff are not only highly trained clinical professionals, but they are also either ex-military or know the military culture first-hand. This sets them up to provide a non-judgemental service and build trust with those seeking help.
“Our research has found that veterans can often struggle to know when to ask for help, but by providing them with professionals who have a deeper understanding of what they are going through”[25]
The former Chief Executive of Defence Medical Welfare Services (DMWS) and 'independent' Armed Forces Chair to the NHS England Armed Forces Commissioning Team has repeatedly failed to support, recognise, or assist veterans suffering from acquired brain injuries or Mefloquine (Lariam) neurotoxicity. Alarmingly, she has often blocked, deleted, or hidden adverse posts by veterans who are genuinely challenging prevailing narratives and calling for balanced funding[26]. Whatever her motivations, she has been influenced by deeply entrenched military mental health narratives, which undermine the principles of the Armed Forces Covenant. Her actions suggest she does not represent the true voice of patients; despite the title she holds. With her links to NHS England, the NHS England Armed Forces Commissioning Team, and King's College Mental Health Research (KCMHR), this bias perpetuates disadvantage for those veterans who need support the most.
An Associate Director of Nursing, known for her pioneering work, established the first-ever mental health network between the MoD and NHS, leading to the creation of specialist NHS services for veterans. These services influenced a national rollout and were followed by bespoke programs addressing gambling, drug and alcohol issues. She also founded the first IPS Veterans Employment Support Service, multi-agency support groups, NHS carers’ programs, veteran anger management and PTSD therapies, and social prescribing activities for veterans. In correspondence with her on 02 October 2021 she reflected on the challenges of her work, saying[27 :
“I have treated several vets with Larium toxicity. It appears there is so much more work to be done on this”
It was this award-winning nurse who provided me with the invaluable opportunity to speak at the International Trauma-Informed Care Network event on 12 November 2021. However, my decision to participate led to significant backlash from her colleagues at the King’s Centre for Military Health Research (KCMHR), who expressed their disapproval, given the controversial nature of the event within their professional circles. Despite the recognition of her leadership and the positive impact she had in facilitating this opportunity, she faced considerable pressure from her associates at KCMHR for supporting my involvement.
“I’m someone who has devoted 20 years to helping veterans and gave you the chance to speak at my global network- even when I got a backlash from others for doing so”.
When challenging the lack of action despite the promised support from a self-acclaimed Champion nurse she appeared visibly influenced by the powerful presence of Simon, the Non-Executive Director on the NHS England board, and Nicola, Co-Director of the King’s Centre for Military Health Research (KCMHR). Their authority and credentials seemed to overshadow her concerns, effectively silencing her. As a result, Nurse Palmer appeared to defer, possibly feeling outmatched by their influence and expertise, despite the validity of her perspective. This moment underscores how their positions of power may have led to her reluctance to assert her concerns.
“my association with Simon (KCMHR NHS England) and Nicola (KCMR) is that I’ve known them 20 years as I’ve attended every conference then run - because I get to hear about research that has helped me in my job and meet other colleagues from across the UK and beyond. I’m a nurse not a doctor, I can’t change the diagnosis or treatment of those with larium toxicity- but I’ve always tried to support veterans who present to my services with symptoms they feel are related. I get your frustration”.
On 06 December 2021, after an attempt to find a way forward for injured Lariam veterans with the Associate Director of Nursing, she shared the following conversation, which seemed that KCMHR were manufacturing-doubt[2] about the credibility of the issue:
“I spoke at length to Neil (Professor of Defence Mental Health, and senior member of the military mental health research team) tonight. He’s worried that veterans are being manipulated by lawyers who are just interested in money, rather than ensuring the right diagnosis . I stressed that we must hear the voices of those with lived experiences, we must ask the question and tailor treatment accordingly . He asked me to explain to the network that it’s controversial and I said I would not do that as it’s not controversial . It’s a known fact Larium causes these symptoms - his point was that the evidence does not show long term symptoms , only sudden onset and immediate symptoms for short period. I explained that by asking veterans we can gain a better understanding” .
Upon recognising the name, I recalled that it was this very professor I had approached directly in May 2020, who stated[28]
“Our KCMHR team have looked at post deployment screening for psychological health problems & found it not effective. A recent expert review also found that pre-role/pre-employment mental health screening is also not effective”
When challenged about the confounding symptoms of ABI/mTBI and mental health, and the need to ensure appropriate treatment pathways, the Professor agreed with the importance of addressing these complexities. However, his response seemed to downplay the urgency of tailored care, further complicating the discussion.
“More work needed to tease out the apparent cases of mTBI which are in fact mental health(?) and as you say how to detect any form of subtle TBI (Since severe ones will be evident) that needs intervention”.
The ability to shift responsibility between organisations without accountability distorts the truth and obstructs the establishment of proper research and healthcare pathways, as mandated by the Armed Forces Covenant. In this case, after requesting clarification from the former Minister for Defence People and Veterans on when the MOD first became aware of the critical 2014 EMA PRAC report, I received a response from Headquarters Joint Medical Group dated 4 February 2020[29]. The letter stated that the Minister and the MOD took the health and wellbeing of the Armed Forces community very seriously and considered it a government priority.
It claimed that the Defence Select Committee was aware that the MOD adhered to the guidance of relevant national bodies in prescribing antimalarial drugs to service personnel. The letter also noted that the Medicines and Healthcare products Regulatory Agency (MHRA) worked closely with the European Medicines Agency (EMA). It highlighted the PRAC report's findings on long-term neuropsychiatric adverse events, even after discontinuation of the drug, and stated that the MOD was aware of the revised Mefloquine warnings in the December 2014 Drug Safety Update. If so, why did they not act, and why has this information been omitted from Veteran Services. The letter included a caveat noting that:
“The MHRA is the government agency responsible for ensuring that medicines and medical devices work and are acceptability safe”
The MOD claimed that both the Minister and the department took the health and wellbeing of the Armed Forces community very seriously, describing it as a government priority. However, despite referencing the MHRA’s accountability, the MOD knowingly concealed its research study on antimalarial chemoprophylaxis, including Lariam (713/MoDREC/15), from the MHRA. In a letter, dated 02 January 2020, the CEO of the MHRA confirmed[30]:
“The MoD informed us that as the results are intended for publication in the future, they had already refused disclosure of the protocol in response to a Freedom of Information request and had also taken the decision not to share the protocol with MHRA.”
Why was such critical research, which could have positively impacted services and care pathways for injured veterans, kept from the very agency responsible for oversight? Furthermore, given the MOD’s stated commitment to the health and welfare of the Armed Forces, why was there no accountability from the government agency to ensure the MOD upheld its duty of care? This raises serious questions about the integrity of both the MOD’s actions and the effectiveness of its oversight mechanisms to deliver the Armed Forces Covenant.
In November 2023, I submitted a question to the MHRA about adverse events linked to Mefloquine, at their Public Board Meeting, and received a written reply stating Mefloquine has been associated with a range of neuropsychiatric disorders, including insomnia, depression, anxiety, paranoia, suicidal behaviour, and hallucinations[31]. These risks are outlined in the product information and Patient Information Leaflet (PIL), with specific warnings for individuals with a history of psychiatric illness or those on medication for such conditions. The potential for these adverse effects highlights the need for careful consideration when prescribing mefloquine, particularly for vulnerable populations.
They confirmed the conclusions from the European Medicines Agency, including that the MHRA, also reviewed the safety data for Mefloquine/Lariam in 2013, leading to strengthened safety warnings. A range of regulatory actions was introduced across Europe and the UK, including enhanced warnings about psychiatric effects in product information, new prescribing guidelines, checklists for healthcare professionals, and an alert card for patients. The MHRA also went on to say:
“….that in addition to the guidelines set out by Roche (the manufacturer at the time), the MoD also takes advice on the use of Lariam from the Advisory Committee for Malarial Prevention (ACMP) through Public Health England. The ACMP is described as an expert committee, established to formulate guidelines on malaria prevention in the UK”
Given the limited measures recommended by the MHRA, it raises serious concerns as to why appropriate action was not taken within the Defence sector to identify and support vulnerable veterans affected by Mefloquine therapy. The lack of proactive steps to capture and address the existing harm is troubling, especially in light of the Armed Forces Covenant, which commits to ensuring that veterans receive the care and support they deserve. Despite the known risks outlined by the MHRA and the subsequent regulatory actions in 2013, there appears to have been a failure to adequately protect or monitor those at risk within the Armed Forces, leaving vulnerable veterans without the necessary interventions. This raises critical questions about the fulfilment of the Covenant's obligations and the responsibility of Defence authorities to prioritise the wellbeing of those who served.
In direct correspondence to former British Army, Chief of General Staff on 11 March 2020[32] I was informed by him:
In direct correspondence, the former Chief of the General Staff expressed serious concerns regarding the use of Mefloquine (Lariam), describing it as a potentially dangerous drug, particularly in a significant number of cases. He stated that he had campaigned against its use for over a decade, recognising the well-documented link between Mefloquine and severe mental health issues. His concerns date back to 1999, when the drug was prescribed to his son, although his active involvement in efforts to restrict its use came later. Despite his senior position, he asserted that he had no direct authority over the distribution of medications to soldiers and, while he could advocate against Mefloquine, he was unable to ban it. However, Joint Service Publication (JSP) regulations allow for administrative orders to override medical officers' decisions, revealing systemic barriers that hinder timely interventions. This underscores the military’s failure to act swiftly on known health risks, the bureaucratic obstacles to meaningful reform, and the ongoing, unaddressed impact on the physical and mental health of service personnel.
“I am in no doubt that Mefloquine – Lariam – is a potentially dangerous drug in an unacceptably high proportion of instances when it is prescribed. I have been campaigning against its use for over a decade”.
“The link between mental health and Mefloquine is well established, I understand. My suspicions about Mefloquine do indeed go back to its prescription to my son Berite, back in 1999, however I only began to engage in the campaign against its use some time after that. During my years as the Chief of General Staff, the issue was not highest on my priority list as the battle for resources to conduct properly our campaigns in Iraq and Afghanistan was all-consuming. As CGS I had no direct authority over what prophylactics were issued to our soldiers. The Defence Medical Services did not answer directly to me and, although I could argue against the use of Mefloquine/Lariam, I could not order it not to be used”.
Every member of the armed forces who has sustained service-related injuries should be entitled to proper screening, valid assessment, diagnosis, and appropriate treatment and care. Lariam as a ‘drug of last resort’ may help prevent further harm to Armed Forces personnel, but failing to assist those who have already been affected contradicts the very principles of the Armed Forces Covenant.
Areas Where the Armed Forces Covenant is Failing the Armed Forces Community
a) The Armed Forces Covenant's principles of "No disadvantage" and "Special consideration" are not being honoured for veterans suffering from Mefloquine (Lariam) toxicity or other acquired brain injuries.
b) Affected veterans are denied the medical attention they need, leading to systemic neglect, misdiagnosis, and a lack of proper support.
a) Despite growing research and international findings (e.g. European Medicines Agency, Australian Royal Commission), there is still no comprehensive recognition of Lariam’s neurotoxic effects in UK veteran services, defaulting to ‘PTSD’ diagnosis of convenience.
b) Veterans suffering from these conditions are not properly screened, validly assessed, or diagnosed, which contravenes the Covenant’s duty of care.
a) Veterans’ concerns have been repeatedly disregarded by key individuals, including NHS, COMBAT STRESS, Veteran Commissioners, Service Charity Chief Executives and other healthcare leaders.
b) The failure to incorporate Lariam toxicity into clinical training and support services highlights a disregard for veterans' needs.
a) NHS clinicians, including those in veteran mental health services, lack specific training on Lariam toxicity and its long-term effects, resulting in continued misdiagnoses and mistreatment.
a) Despite credible findings from respected organisations such as the European Medicines Agency (EMA) and multiple international reports, there remains a persistent and unjustifiable reluctance to acknowledge the long-term effects of Mefloquine toxicity and acquired brain injuries on veterans. This ongoing failure directly undermines the Armed Forces Covenant’s fundamental commitment to ensuring special consideration and support for those who have served and suffered life-altering health consequences. The significance of the evidence presented in the January 2014 EMA Pharmacovigilance Risk Assessment Committee (PRAC) report cannot be overstated, and the Defence Select Committee is urged to review the conclusions.
b) The Ministry of Defence (MoD) has yet to submit critical data from the 713/MODREC/15 study to the Defence Select Committee (DSC), despite being instructed to do so in 2016. This continued delay obstructs informed decision-making, hinders vital research, and exacerbates systemic neglect of Armed Forces welfare concerns.
a) Veterans raising concerns about Lariam toxicity face continuous barriers, including indifference from senior officials and unhelpful responses from veteran services (e.g. OP RESTORE, COMBAT STRESS, Veterans’ Commissioner).
b) The lack of action and acknowledgment exacerbates the suffering of veterans, leaving them at a significant disadvantage and sanctuary trauma.
a) The ongoing failure to provide timely diagnoses, effective treatment, and proper support to veterans with Lariam toxicity directly contradicts the Armed Forces Covenant’s values.
b) This systemic neglect deepens the mental and physical suffering of veterans, undermining the Covenant's core commitment to support those who have served.
Main Causes for These Failings
a) Widespread lack of knowledge and education among doctors, clinicians, and patients regarding the neurotoxic effects of Mefloquine (Lariam) and the prevalence of Acquired Brain Injuries (ABIs) among veterans.
b) Medical professionals often fail to diagnose neurotoxicity or misdiagnose it as PTSD, leading to inappropriate treatment and exacerbation of symptoms.
a) Research funding is biased towards projects likely to be profitable rather than those truly beneficial for patients, contributing to a lack of comprehensive research into the long-term effects of Mefloquine and ABIs.
b) Medical journals and the media are complicit in biased reporting, perpetuating misleading narratives that prevent accurate awareness and appropriate action on these issues.
a) Conflicts of interest, particularly within organisations like the King's College Mental Health Research (KCMHR), have manufactured doubt and misdirect funding away from neurology, undermining independent research on Mefloquine toxicity and ABIs.
b) This has obstructed the implementation of effective screening, assessment programmes, and evidence-based solutions by non-biased organisations unaffiliated with commercial interests.
a) Key veteran services and charities such as the Royal British Legion (RBL), Combat Stress, Help for Heroes, DMWS, OP COURAGE, OP RESTORE, Veteran Gateway, SSAFA, ABF, and others do not include information about Mefloquine toxicity or Acquired Brain Injuries on their websites or literature, despite sufficient evidence available, including the conclusions of the January 2014 European Medicines Agency (EMA) PRAC report.
b) This omission reflects a systematic failure to acknowledge the issue, leaving veterans without the support or resources they need, while highlighting the Conflicts of interest by those who significantly fund such veteran charities.
a) Medical training, clinical guidance, and resources on the neurotoxic effects of Mefloquine and ABIs are severely lacking.
b) The Royal College of General Practitioners' (RCGP) Veteran Friendly GP initiative fails to include information on Mefloquine toxicity or Acquired Brain Injuries, preventing GPs from offering proper care or making accurate referrals.
a) Due to lack of awareness, clinicians are unable to uphold their duty of candour, failing to inform patients of the full scope of their medical conditions, or misinforming them about the root causes of their symptoms.
b) Veterans continue to suffer due to the lack of transparency and honest communication from healthcare providers.
a) Misinformation and lack of appropriate training led to misdiagnoses, such as PTSD being used as a ‘diagnosis of convenience’ when the true cause may be Mefloquine toxicity or an acquired brain injury.
b) There is no long-term follow-up for veterans who present with adverse symptoms, making it impossible to track the progression of their conditions or provide proper care over time.
c) Insufficient veteran medical records and the absence of comprehensive screening prevent proper diagnosis of conditions like Mefloquine toxicity, leaving veterans without the care they need.
a) The Ministry of Defence (MOD) has failed to address or even acknowledge the January 2014 European Medicines Agency PRAC report, which highlights the neurotoxic effects of Mefloquine, leading to a cover-up of vital information that could help veterans, including research 713/MODREC/15.
b) The Defence Select Committee inquiry has also been tainted by omissions of this critical evidence, further delaying the implementation of necessary changes.
a) The lived experiences of veterans suffering from the effects of Mefloquine toxicity and ABIs, particularly those impacted by suicides, have been ignored by the MOD, and not adequately investigated during Ministry of Justice (MoJ) inquests.[33]
b) This failure to properly investigate the root causes of veteran suicides contributes to the ongoing disadvantage faced by affected veterans, deepening the sanctuary trauma they experience.
Recommendations to the Defence Select Committee
CONCLUSION
The Armed Forces Covenant will continue to fall short of its moral obligation to the Armed Forces Community and its core principles unless the Ministry of Defence (MoD) and wider clinical services acknowledge that many service personnel and veterans experiencing mental health struggles are, in fact, suffering from Mefloquine toxicity and other brain injuries[34] [35].
In the United States, Mefloquine poisoning is recognised as a distinct condition known as neuropsychiatric quinism or Chronic Quinoline Encephalopathy, with a documented pathophysiology (neurotoxicity). Similarly, Australia’s Royal Commission has underscored the issue, and the August 2024 Defence Health Agency Medical Surveillance Monthly Report (Volume 31, No. 8), co-authored by the director of the Australian Army Malaria Research Institute[36], explicitly excludes Mefloquine from the list of acceptable malaria prophylaxis for the Australian Defence Force (ADF).
Despite the findings of the 2015/16 Defence Select Committee (DSC) Lariam inquiry, the MoD continues to resist mounting medico-scientific evidence linking Lariam to long-term or persistent neuropsychiatric damage in service personnel. This resistance has led to the misattribution of symptoms, resulting in inappropriate and potentially life-threatening treatment for veterans with Lariam toxicity. While Lariam toxicity is a service-related condition, the Armed Forces Covenant has failed to measure the scale of this issue or adequately address it.
This submission does not aim to revisit prior Defence Select Committee discussions or ongoing MOD litigation. However, it is crucial to highlight serious evidence suggesting that omissions from the 31 January 2014 European Medicines Agency Pharmacovigilance Risk Assessment Committee (PRAC) report—by both the MOD and the drug manufacturer—have directly contributed to the sanctuary trauma endured by veterans today. Moreover, the derisory global settlement of £5,000 (before fees) imposed on Lariam victims and their families is not only inadequate but also an affront to those suffering, offering little more than the cost of their funerals. This lack of meaningful redress risks eroding hope and fuelling further veteran suicides.
Ultimately, the burden has been unfairly placed on the very individuals who have already suffered the most. Veterans damaged by these failings are being left to fend for themselves, with some, including myself, taking on the responsibility of supporting others who have been abandoned[37]. This failure to act dishonours the Covenant and betrays the trust of those who have served their nation.
Reference(s):
[1] Daily Telegraph article 02 March 2024 Soldiers harmed by anti-malaria drug launch landmark legal claim against MoD [link]
[2] International Trauma-Informed Care Network ‘Lived-Experience’ presentation dated 11 November 2021 [link]
[3] The Armed Forces Covenant Two core Principles [link]
[4] Recommendation 61: Establish a brain injury program Final Report - Volume 4: Health care for serving and ex-serving members Page 15 [link]
[5] All-Party Parliamentary Group for Acquired Brain Injury Reception, Jubilee Room, Houses of Parliament 10 May 2023 [link]
[6] 30 x A5 leaflets used to brief members of Parliament at the Acquired Brain Injury Reception [download]
[7] OP RESTORE email reply rejecting assistance with injured Mefloquine Veterans dated 14 June 2024 [download]
[8] Head of Armed Forces - Policy & Operations rejecting assistance with injured Mefloquine Veterans email dated 04 October 2024 [download]
[9] The Mefloquine Single Point of Contact, published on 30 August 2016 [link]
[10] COBSEO Veteran Charities and UK Clinical Services Overlook Lariam Toxicity and Acquired Brain Injury in Literature and Online Content [download]
[11] Vilified by Veteran UK at Tribunal, Leading to the HM Court & Tribunal Service withdrawing My War Pension Case [download]
[12] War Pension NHS Prescription Exemption Certificate: Veteran UK Acknowledges Mefloquine Side Effects in War Pension Claim, but NHS Provides No Care [download]
[13] Referrals by untrained GPs and NHS psychiatrists on Mefloquine injured veterans [download]
[14] Doctor of Tropical Medicine and Disease Leads to Back to Square One for Mefloquine Injured Veteran [download]
[15] Hypothesis on Mefloquine Toxicity and Brain Injury: Limited Research on Neuropsychological Effects and Cognitive Impacts [download]
[16] Video – Exposed: The Truth behind ABI, TBI, & Mefloquine cover-ups in veteran ‘mental health’ [link]
[17] Video - Brain Injury WIN at the Defence Select Committee's update on Armed Forces & Veterans Mental Health [link]
[18] UK ‘Independent’ Veteran advisors to Office of Veteran Affairs correspondence [download]
[19] European Medicine Agency’s Pharmacovigilance Risk Assessment Committee (PRAC) report conclusion, dated 31 January 2014 [download]
[20] Veterans’ Commissioner for Wales correspondence [download]
[21] CEO Combat stress letter 08 December 2016 [download]
[22] COMBAT STRESS’s Director of Medical Services, dated 12 March 2018 [download]
[23] Video - Uncovering the Overlooked: The Omission of Mefloquine (Lariam) Toxicity in Veteran GP Training [link]
[24] RCGP Veteran Friendly GP Accreditation Fails to Address Mefloquine (Lariam) Toxicity and Acquired Brain Injuries in Veterans [link]
[25] NHS expands mental health support for veterans with more than half saying it’s hard to speak up. NHS England Website 09 January 2024 [link]
[26] Failure of Former DMWS Chief Executive and NHS Armed Forces Chair to Address Veteran Health Concerns on Acquired Brain Injuries and Mefloquine (Lariam) Toxicity [download]
[27] Associate Director of Nursing and Founder of International Trauma-Informed Care- Influence of KCMHR on Mefloquine (Lariam) Toxicity in Veterans [download]
[28] Conflicting Perspectives: Professor Acknowledges Complexity of ABI/mTBI and Mental Health, Yet Downplays Urgency of Tailored Care [download]
[29] HQ Joint Med Group Letter dated 04 February 2020 acknowledging the European Medicine Agency’s Pharmacovigilance Risk Assessment Committee (PRAC) report conclusion [download]
[30] Letter from Dr June Raine CBE_Interim CEO, MHRA Research Study on antimalarial chemoprophylaxis including Lariam by the Ministry of Defence 713_MoDREC_15 [download]
[31] Medicines & Healthcare products Regulatory Agency (MHRA) Public Board Meeting reply on Mefloquine in Defence [download]
[32] Correspondence with Former Chief of General Staff’s on Mefloquine (Lariam): Disadvantaged by Military Health Structure and Mental Health Risks [download]
[33] Cpl Chris Small reached out for help suffering Mefloquine toxicity before taking his own life. [download]
[34] Minister for Defence People and Veterans , The Rt Hon Johnny Mercer MP knowledge of the critical 31 January 2014 EMA PRAC Report in December 2019 [link]
[35] Minister for Defence People and Veterans, The Rt Hon Johnny Mercer Facebook Live Lariam Question on the 31 January 2014 EMA PRAC Report in October 2019 [link]
[36] Defence Health Agency Medical Surveillance Monthly Report (MSMR) dated August 2024 MSMR August 2024. Volume 31, No. 8. [link]
[37] Captured testimonies of 'lived experiences' from veterans abandoned after their use of Mefloquine [download]
SCIENCE MEDICINES HEALTH
31January 2014 EMA/63963/2014
Pharmacovigilance Risk Assessment Committee (PRAC)
Updated PRAC rapporteur assessment report on the
signal of permanent neurologic (vestibular) disorders with
mefloquine
7 Westferry Circus • Canary Wharf • London E14 4HB • United Kingdom Telephone +44
(0)20 7418 8400 Facsimile +44 (0)20 7418 8416
E-mail info@erna.eurnpa.cu Website www.ema.europa.eu An agency of the European Union
AFC0060
1. Administrative information 3
1.1. Timetable 3
2.1. PRAC initial analysis and prioritisation 4
2.2. Marketing-authorisation holder's responses 4
3. Conclusion and recommendations .31
3.1. Changes to the product information 31
3.2. Request for supplementary information 32
3.3. Communication 32
4. Comments from member states .32
S. Points for discussion/agreement .34
Summary PRAC assessment report on the signal of <issue> with <INN and/or product name(s) or product class> 35
Updated PRAC rapporteur· assessment report on the signal of permanent neurologic (vestibular) disorders with mefloquine
AFC0060
Active substance (INN) or class name(s) [Plus invented name, where applicable.] | Mefloquine |
Signal and signal status |
|
From [Rapporteur for this signal] | DE-BfArM | |
PRAC member | Martin Huber |
|
Assessor(s) |
| |
Scientific administrator |
|
Date of report (preliminary PRAC Rapp. AR) | 07/01/2014 |
PRAC comments on AR |
|
Date of report (Updated PRAC Rapp. AR) | 28/01/2014 |
PRAC discussion/adoption |
|
Date of report (PRAC Rapp. AR on response to RSI) |
|
PRAC discussion/adoption |
|
|
|
Strength(s) | 250 mg | |
Pharmaceutical form(s) | film-coated tablet | |
Route(s) of administration | oral | |
Indication | Therapy and prophylaxis of malaria | |
ATC code | PO1BCO2 | |
Marketing-authorisation holder(s) | Roche | |
Route of marketing authorisation(s) | ||
| Centrally authorised (or applied for) product(s) (CAPS) | |
| Mutual-recognition or decentralised procedure (MRP/DCP) | |
X | X Purely nationally authorised product(s) (NAPs) | |
| Other (compassionate use, traditional herbal use, etc.): |
Updated PRAC rapporteur assessment report on the signal of permanent neurologic
(vestibular) disorders with mefloquine
AFC0060
Mefloquine is a 4-quinoline methanol derivative and is structurally related to quinine.
Mefloquine is indicated for the prophylaxis, therapy and stand-by treatment of malaria.
Mefloquine acts on the asexual intraerythrocytic forms of the human malaria parasites:
Plasmodium falciparum, P. vivax, P. malariae and P. °vale. Mefloquine is effective
against malaria parasites resistant to other anti-malarials such as chloroquine, proguanil,
pyrimethamine and pyrimethamine-sulfonamide combinations.
A signal regarding permanent neurologic (vestibular) disorders was identified by FDA in July
2013 and the FDA-AR was analysed by DE. Subsequently DE introduced the signal to the
PRAC. During the meeting on 07 -10 October 2013 PRAC recommended that the MAH of
Lariam®, innovator product for mefloquine, be requested to submit a cumulative review of
neurologic (vestibular) disorders including a proposal for an update to the product
Information.
2.1. PRAC initial analysis and prioritisation PRAC Recommendations/Advice
During its meeting of 7-10 October 2013, in accordance with Article 107h of Directive
2001/83/EC and Article 21 of Commission Implementing Regulation (EU) No 520/2012 the
European Medicines Agency's Pharmacovigilance Risk Assessment Committee (PRAC) has
analysed and prioritised a signal of possibly permanent neurologic (vestibular) side effects
with mefloquine (see PRAC Agenda under item 4.2.1.
https: //www.ema.europa.eu/ema/index.jsp?curl - pages/about us/document
listing/document listing 000353.jsp&mid-WC0bOlac05805a21cf).
Having considered the available evidence from the FDA communication the PRAC concluded
that the current sections 4.4 and 4.8 of SmPC (PL accordingly) of mefloquine-containing
medicinal products are not considered appropriate to inform about t h e possibility o f
persistent or permanent neurologic (vestibular) disorders.
Recommendation:
Therefore, the PRAC recommended that t h e Marketing Author is at ion Holder (MAH) of
Lariam®, innovator product f o r mefloquine, be requested to submit a cumulative review of
neurologic (vestibular) disorders including a proposal for an update to the product
FDA Drug Safety Communication, based on the requirements provided in Article 23(4) of
Directive 2001/83/EC. The cumulative review should be submitted by 6 December 2013.
2.1. Marketing-authorisation holder's responses
Following PRAC's request, considering FDA's communication and the signal sent by BfArM to
PRAC related to the possible permanent character of these events, the MAH is submitting
two Drug Safety Reports (DSRs) which need to be reviewed in conjunction:
• Drug Safety Report (DSR) 1040001 (please refer to module 5.3.6); cumulative analysis
till 06 May 2010, to analyse all medically confirmed SAEs of psychiatric disorders and
nervous system disorders persisting for more than 90 days.
• Addendum DSR 1058255 (please refer to module 5.3.6), which is an addendum to the
DSR 1040001, and provides*:
Updated PRAC rapporteur assessment report on the signal of permanent neurologic
(vestibular) disorders with mefloquine
AFC0060
a) A n analysis of all medically confirmed SAEs of psychiatric disorders and nervous
system disorders persisting for more than 90 days reported between 07 May 2010
and 27 October 2013.
b) A cumulative review (till 27 October 2013) of all vestibular disorders persisting
for more than 90 days.
• Based on the assessment in DSR 1040001, the MAH amended the Lariam Company Core
Data Sheet (CDS, refer to module 5.4 for the current CDS V. 4.0) regarding the duration of
neuropsychiatric disorders in the "Warnings and Precautions" section. The information that
adverse reactions to Lariam may occur or persist up to several weeks after discontinuation
of the drug and that dizziness or vertigo and loss of balance may continue for months after
discontinuation of the drug was added. The analysis within the current addendum DSR
1058255 confirmed this outcome for most of the cases; however the persistence of events in
a small proportion of patients may be possible.
• Based on the review provided in the addendum DSR 1058255, including case reports
from the Roche Global Drug Safety Database ARISg, the MAH will amend the "Warnings and
Precautions" section of the current Lariam CDS V. 4.0 (refer to module 5.4 for the current
CDS v4) to include information on the persistence of certain neuropsychiatric events after
discontinuation of the product.
Search strategy
Since the current DSR is an addendum to the DSR 1040001, prepared in 2010 (cutoff
date of 06 May 2010), the same search criteria were applied (see Section 5,
page 9 of DSR 1040001). Therefore, a multiaxial search in ARISg was conducted for
cases with events in the SOC "Psychiatric Disorders" and SOC "Nervous
System Disorders" reported between 07 May 2010 and 27 October 2013 (latest
report coding completed). Due to multiaxiality, this search includes relevant terms
from the SOC "Ear and Labyrinth Disorders".
However, a second search (cumulative, cut-off date of 27 October 2013) was
carried out for the broad SMQ "Vestibular Disorders" (see Appendix 1 for a
complete list of MedDRA PTs used in the search) and, for comprehensive reasons to
search within the primary SOC, t h e PT "Tinnitus", reported i n individuals who
received mefloquine f o r malaria chemoprophylaxis, malaria treatment, stand-by
treatment, or for an unknown indication.
These searches were carried out under the MedDRA version 16.0.
The following cases were excluded:
- Non Substantive follow-up
cases
- Inactive
Cases
- Case reports including only non-serious
events
The aim of the searches was to identify the cases conforming to any of the
following event criteria groups:
Group I
AFC0060
Based on the difference between AE Onset Date and AE Cessation Date, event duration was greater than or equal to 90 days.
- Group II
For events where AE Cessation Date is missing, based on the difference between AE Onset Date and AER Company Received Date, event duration was greater than or equal to 90 days, and the event outcome was one of the following:
- Fatal
- Not recovered/not resolved
- Recovered/resolved with sequelae
- Recovering/resolving
- Group III
For events where the AE Cessation Date is missing, event duration was greater than or equal to 90 days (based on the difference between AE Onset Date and AER Received Date), and the event outcome was:
- Recovered/ resolved
The selected events under SOC "Psychiatric Disorders" are presented in Section 6.1.1, and the events under SOC "Nervous System Disorders" in Section 6.2.1. Case reports with both types of SAEs are cross-referenced. The events under the SMQ "Vestibular Disorders" and the PT "Tinnitus", if not covered previously, are discussed in Section 6.3, and Section 6.4, respectively.
The SAEs from groups I, II, and III were analysed in the same way as for the DSR 1040001:
a) In the first step, all cases retrieved from ARISg were individually reviewed in order to determine whether mefloquine was used as treatment or chemoprophylaxis:
- Indication: Malaria chemoprophylaxis
- Indication: Malaria treatment
- Indication: Unknown
This distinction is important, considering that subjects taking mefloquine for malaria chemoprophylaxis are generally healthy, while patients with malaria may develop complications of the disease (e.g. coma, convulsions, liver impairment) or use co- medications (e.g. quinine) that often provide an alternative explanation in the case assessment.
b) In the second step, duration of the SAEs was manually reviewed, as the case selection was based on auto coding, which may not reflect case updates included in the narratives only. The following classification was applied:
- 1: SAE duration <90 days, or pre-existing to mefloquine exposure
- 2: SAE duration 90 days to 1 year
- 3: SAE duration 1 year to 2 years
- 4: SAE duration 2 to 3 years
- 5: SAE duration >3 years
AFC0060
- 6: SAE duration unknown
If the individual relevant SAEs in one case have a differing duration, the longest
duration is taken for classification.
c) In the third step, all cases were individually reviewed and classified according to
the following assessment criteria:
- Category A: Insufficient information for assessment, or controversial data
- Category B: Relevant medical history and/or confounding factors including e.g. co-medication present
- Category C: The relevant SAE occurred more than 6 months after mefloquine discontinuation
- Category D: No alternative Explanation found
- Category E: Case is out of scope of the review (mainly because of a duration of the relevant SAE of <90 days, or another drug clearly caused the SAE)
- Category F:
Overdose
It should be noted that "disability" is marked as a seriousness criterion at the time the event is reported and does not necessarily reflect the final outcome of the event. All case narratives were manually reviewed to determine if there was any evidence of disability outcome reported.
Based on the various cornerstones for defining SAE duration and the different outcomes in a single patient with more than one SAE, a patient may be included in more than one group.
Below the drug safety reports by Roche. have been summarized.
N=whole number of case reports in the category
D=number of case reports under category D with a known duration
Category D = No alternative Explanation found
Summary of Drug Safety report 104001 part of the PSUR-Worksharing for mefloguine 001 (cumulative search: cut- off date May 2010}
(Only case reports from category D with a known duration are mentioned in the summaries)
A) SOC Psychiatric Disorder
Group I
AFC0060
1) Indication: Malaria Prophylaxis (N=37; D=Sl
There were 37 patients in this group: of those patients one was out of the scope of this report as the duration of the relevant SAE was less than 90 days In addition 12 patients with a relevant SAE duration of 90 days - 1 year from the 37 reports had only very limited information which did not allow for a causality assessment of the report, and 8 patients with a relevant history and/or other alternative explanations confounding their report will be excluded from discussion, while 6 patients are presented below as they had no explanation other than mefloquine for the occurrence of the relevant event. Likewise two further patients from group/category D with a SAE duration of 1 - 2 years are presented below, while a patient with insufficient information from category 3 is also excluded from the review.
| Duration 1
| Duration 2 | Duration 4 | Duration 4 | Duration 5 | Duration 6 |
Category A | 0 | 12 | 1 | 2 | 0 | 0 |
Category B | 0 | 8 | 0 | 2 | 2 | 0 |
Category C | 0 | 0 | 0 | 0 | 0 | 0 |
Category D | 0 | 6 | 2 | 0 | 0 | 1 |
Category E | 1 | 0 | 0 | 0 | 0 | 0 |
Category F | 0 | 0 | 0 | 0 | 0 | 0 |
Result of case review: Category A: insuff/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Duration 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown
(2D): An 18-year-old female patient with a BMI of 19.4, no relevant medical history, and no comedication took 250mg/day mefloquine malaria prophylaxis for three days, when she experienced hyperventilation, dizziness, and anxiety with panic attacks, and then continued mefloquine once a week for another two weeks. She was
treated with paroxetine and improved subsequently; the psychiatric events were reported to be resolved within 117 days.
(2D): a 27-year-old male patient with no relevant medical history nor on comedications, and with a BMI of 25.81 took lx250mg/week mefloquine for 8 days.
After the first day he experienced hypomania, then after the next mefloquine dose he became psychotic with mania and paranoia for which he was hospitalized and treated with haloperidol. After repatriation he had a recurrence of the symptoms and was
rehospitalized and received depakote and venlafaxine. He recovered after a total duration of 265 days.
(2D): A 67-year-old female patient with no history of psychosis nor on
AFC0060
comedications received mefloquine 250mg/week (exact dates unknown) which was discontinued prior to her leaving for abroad. Some days later, she became very confused, and manifested psychotic features, and was hospitalized. She initially recovered within a few days, but psychosis and confusion recurred approximately 5 months later, and she was re-hospitalized, and recovered subsequently. Neurologic examinations were carried out which did not reveal dementia. This report is also included in Group I malaria prophylaxis: nervous system disorder events: SAE confusion, classified as 2D.
(2D): A 30-year-old male patient with no psychiatric history, taking a single dose of ibuprofen and of ketoprofen, respectively while on lx250mg mefloquine/week for malaria prophylaxis experienced intermittent dyspnea, anxiety attacks, suicidal ideation, psychosis, palpitations, numbness of the head, confusion and muscle cramps for which he was hospitalized after taking 7 doses. After discontinuation of mefloquine the SAE: suicidal ideations resolved slowly over 6 months.
This report is also included in Group II malaria prophylaxis: psychiatric system disorder events: SAE psychotic disorder, classified as lE (Appendix 2), and Group II malaria prophylaxis: nervous system disorders, classified as 2A (Appendix 10).
(3D): A 23-year-old female patient with no psychiatric history was taking lx250mg /week mefloquine for malaria prophylaxis for 9 months when she experienced psychosis, and depression. Comedication was a contraceptive. She was prescribed diazepam, mefloquine was maintained. Some eight months later she was repatriated, and discontinued mefloquine. Again three months later she was started on sertraline, she also took several antidepressants. Some weeks later, the symptoms had resolved, and sertraline was finally discontinued.
(2D): A 26-year-old female patient with no psychiatric history, and no comedication took lx250mg mefloquine/week for malaria prophylaxis and experienced hypomania. She was treated with haloperidol. Some weeks later, mefloquine was discontinued, and she recovered six weeks later.
(2D): A 25-year-old male patient with a BMI of 22.9, no psychiatric nor abuse history and was not on any comedication took lx250mg mefloquine/week for malaria prophylaxis. After completion the course of mefloquine (total dose: 1750mg) he slowly experienced increasing anxiety, persecutory delusions, and became overtly psychotic, he was hospitalized with paranoid psychosis, and he was treated with haloperidol and lorazepam which resulted in improvement of his symptoms. As he presented subsequently with extrapyramidal symptoms his medications was switched to risperidone. Some two weeks later the dose of risperidone was reduced, and he experienced euphoria. Risperidone dose was again increased and biperiden was added for treatment of the extrapyramidal symptoms. Eventually risperidone was replaced with olanzapine, and he presented with major depression for which he was treated with mirtazapine on an out-patient basis. Mefloquine level in serum was at that time below 20ng/ml. Seven months after start of psychosis the patient had completely recovered from all neuropsychiatric SAEs.
(3D): A 23-year-old male patient with no relevant history and no comedications was taking lx250mg mefloquine/week for malaria prophylaxis. He experienced amnesia, but he consulted his general practitioner only after discontinuation of mefloquine about this problem. ACT scan, 24hr blood pressure monitoring, and blood
tests were all normal. Some months later, he was treated with Ubidecarone which remained ongoing, and he slowly recovered. This report is also included in Group I malaria prophylaxis: nervous system disorder events: SAE amnesia, classified as 3D.
Comments: While all described psychiatric events are listed in the CDS. Following
review of the narrative it is questionable whether the events are persisting for a period of more than 90 days. Two patients exhibiting psychotic episodes are reported to have
AFC0060
recovered initially after a short period of time but then had a recurrence of the symptoms after a prolonged period of time
. Likewise MCN initially recovered from psychosis within approximately one month, but had later complications
of extrapyramidal symptoms and depression, and made a final recovery only 7 months after his symptomatology of neuropsychiatric events had started.
2) Indication: Malaria treatment (N=3; D=0)
3) Indication unknown N=0
1) Indication: Malaria Prophylaxis (N=250; D=8)
There were 250 patients in this group: of those 57 patients were out of the scope of this report as the duration of the relevant SAE was less than 90 days. In addition 46 patients with a relevant SAE duration of 90 days - 1 year from the 250 reports had only very limited information which did not allow for a causality assessment of the report, and 23 patients with a relevant history and/or other alternative explanations confounding their report will be also excluded from discussion, while 7 patients are presented below as they had no explanation other than mefloquine for the occurrence of the relevant event.
Likewise one further patient from group/category D with SAE duration of 2 - 3 years is presented below,....
| Duration 1
| Duration 2 | Duration 3 | Duration 4 | Duration 5 | Duration 6
• .. | |
Category A | 0 | 46 | 10 | 5 | 9 | 62 | |
Category B | 0 | 23 | 7 | 1 | 8 | 9 | |
Category C | 0 | 0 | 0 | 0 | 0 | 2 | |
Category D | 0 | 7 | 0 | 1 | 0 | 2 | |
Category E | 57 | 0 | 0 | 0 | 0 | 0 | |
Category F | 0 | 0 | 1 | 0 | 0 | 0 |
Result of case review: Category A: insuff/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Duration 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown
(2D): A 47-year-old female patient with a BMI of 23.6, no relevant medical history (history of vertigo reported for which she received prochlorperazine) was treated with 250mg/week mefloquine for malaria prophylaxis which he had taken twice in the past with no adverse effects. Approximately 8 weeks after mefloquine had been discontinued she experienced severe anxiety for which she was treated with clomipramine, thioridazine, and propranolol. At last follow-up, the SAE was persisting.
AFC0060
(2D): A 24-year-old female patient with a BMI of 18.5 with no relevant medical history nor comedications took lx250mg mefloquine/week for malaria prophylaxis for a few weeks when she experienced severe panic attacks, dizziness and vertigo, headache, depression, and anxiety. Mefloquine was discontinued, and she was treated with psychotherapy, naproxen, sumatriptan, which gave no relief. The patient had been hospitalized for the SAEs, and citalopram and alprazolam were given. Complete blood count and liver function tests were all normal. The mefloquine drug level was 0.31 mg/ml. A MRI brain scan was normal. The treatment with alprazolam was maintained
and other unspecified treatment given. Six months later the SAEs were persisting. This report is also included in Group II malaria prophylaxis: nervous system disorder events: SAE vertigo, headache, classified as 2D.
(2D): A 42-year-old female patient with no relevant medical history and not taking comedications received mefloquine lx250mg/week for malaria prophylaxis. She took in total two doses of mefloquine and experienced disabling difficulty writing, optic neuritis, blurred vision, a panic reaction, anxiety, nightmares, delusion, memory loss, neurologic symptoms, irrational thinking, depression, demyelination disorder, hemiparesis, dizziness, memory dysfunction, hair loss, nausea, diarrhea, bloating and abdominal cramps. After repatriation she took a third dose of mefloquine, and her condition deteriorated. Brain MRI was normal, and she was treated with cortical steroids, but contracted Herpes zoster in the right C3-C4 thereafter. Her symptoms improved with gabapentin as well as many other medications. At last follow-up her neurological symptoms gradually improved, but dizziness, memory loss and nightmares were persisting. The cause of her symptoms was unclear. This report is also included in Group II malaria prophylaxis: nervous system disorder events: SAE amnesia, classified as 2D.
(2D): A 47-year-old male patient with no psychiatric history, on atenolol for hypertension took lx250mg mefloquine/week for malaria prophylaxis. After the second dose he experienced panic attacks with a feeling of confusion, mefloquine remained ongoing until the course was completed. Six months thereafter panic attacks were persisting, and he started treatment with clobazam. Paroxetine was then started and remained ongoing at last follow-up.
(2D): A 17-year-old female patient with a BMI of 18.4, on oral contraception, and with no psychiatric medical history, took lx250mg/week mefloquine for malaria prophylaxis for approximately 7 weeks, then she experienced hallucinations due to which mefloquine was discontinued. One month later she had nightmares and flashbacks which were persistent and caused disability. Another month later she experienced depression and irritability. Treatment with risperidone, quetiapine and venlafaxine was started. Risperidone was discontinued, and one month later also quetiapine, while venlafaxine remained ongoing. At last follow-up tiredness, terrifying nightmares, flashbacks, depressive symptoms, and irritability were persisting while the hallucinations had improved.
(2D): A male patient in his mid twenties with no relevant medical history (ex-soldier) experienced a panic disorder during the use of lx250mg/week mefloquine for malaria prophylaxis while on vacation. Within 24 hours of taking the first dose he presented with weakness, gait disturbance, vertigo, fever, confusion, aggressiveness, lethargy, sweating and loss of appetite. One week later he also had severe anxiety with feeling of suffocation and insomnia which worsened progressively. He was hospitalized,
all neurological and laboratory tests were normal. He was diagnosed with a panic state and received diazepam. He was repatriated. At that time, his mefloquine level in serum
was 200ng%. He was treated with clonazepam and fluoxetine. The events were persisting 9 weeks later, at last follow-up. This report is also included in Group II malaria prophylaxis: nervous system disorder events: SAE confusion, classified as 2D.
AFC0060
(2D): A 35-year-old female patient with a BMI of 20.6, no relevant medical history nor on comedication took lx250mg/week mefloquine for malaria prophylaxis for four weeks. After the second dose she experienced gait disturbances which lasted three weeks, and also anxiety states. A week later she was briefly hospitalized for depression, sleep disorder, tachycardia, headache, and nausea. Ten days later mefloquine was discontinued, neurological exams and CT were without pathological findings. Promethazine and metoclopramide was started, and approximately four months later she had fully recovered.
(4D): A 20-year-old female patient with a BMI of 18.4, no relevant medical history and on no comedication took lx250mg/week mefloquine for malaria prophylaxis. Approximately one month later, she experienced some psychiatric problems. After further three months she took her last dose of mefloquine, and needed hospitalization for an acute psychotic reaction. She was then repatriated, and received unspecified psychopharmaca. The overt psychotic reaction resolved over time, but she remained in a subacute psychotic state which was waxing and waning. She received lithium which was replaced by thioridazine because of lack of effect. At the time of last report she had not recovered.
Comments: All relevant psychiatric disorder SAEs presented in this section are known to occur on occasions with mefloquine and are listed in the CDS. In addition because of the long half-life of mefloquine, adverse reactions may occur or persist up to several weeks
after discontinuation of the drug.
2} Indication: Malaria CN=28; D=ll
...27 patients of the 28 patients in this group are not discussed in further detail as they fail the review criteria to focus on.
| Duration 1
| Duration 2 | Duration 3 | Duration 4 | Duration 5 | Duration 6
.. |
Category A | 0 | 3 | 1 | 0 | 0 | 6 |
Category B | 0 | 3 | 1 | 1 | 0 | 4 |
Category C | 0 | 0 | 0 | 0 | 0 | 0 |
Category D | 0 | 1 | 0 | 0 | 0 | 0 |
Category E | 8 | 0 | 0 | 0 | 0 | 0 |
Category F | 0 | 0 | 0 | 0 | 0 | 0 |
Result of case review: Category A: insuff/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Duration 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown
AFC0060
history had been overseas for 15 months and on malaria prophylaxis with chloroquine and proguanil when he experienced fever and headache. He was hospitalized and treated with quinine for 3 days in addition to 6 tablets mefloquine for suspected malaria tropica. While under this regimen he presented with psychotic symptoms, circulatory disturbances, vomiting and dizziness. He was repatriated and re-hospitalized. He was temporarily treated with thioridazine. The suspicion of malaria was not confirmed at the new hospital, nor was there any other tropical infections diagnosed. The psychiatrist considered a mefloquine-induced psychosis. He was then treated with imipramine and
hydroxyzine. Two months later imipramine was reduced, and patient could return to work. This report is also included in Group II: malaria treatment: nervous system disorder SAES: dizziness, classified as 1E.
Comment: This is another report of CDS listed psychosis which resolved with appropriate treatment. In addition because of the long half-life of mefloquine, adverse reactions may occur or persist up to several weeks after discontinuation of the drug.
3) Indication: unknown (N=34; D=0)
Group III
1) Indication: malaria prophylaxis (N=19; D=0)
2) Indication: malaria treatment ( N = 0 )
3) Indication: Unknown (N = 8; D=0)
B) Nervous System Disorders
Group I
1) Indication: Malaria Prophylaxis (N 2 1 ; D=3 two of them are already included
in Group I malaria prophylaxis: psychiatric events)
There were 21 patients in this group: of those three patients were out of the scope of this report as the duration of the relevant SAE was less than 90 days. In addition four patients with a relevant SAE duration of 90 days - 1 year from the 21 reports had only very limited information which did not allow for a causality assessment of the report, and 5 patients with a relevant history and/or other explanations confounding their report will be excluded from discussion, while 2 patients are presented below as they had no explanation other than mefloquine for the occurrence of the relevant event. Likewise one further patient from group D with a SAE duration of 1 - 2 years is presented below...
| Duration 1 | Duration 2 | Duration 3 | Duration 4 | Duration 5 | Duration 6
|
Category A | 0 | 4 | 1 | 2 | 0 | 1 |
Category B | 0 | 5 | 0 | 2 | 0 | 0 |
Category C | 0 | 0 | 0 | 0 | 0 | 0 |
AFC0060
Category D | 0 | 2 | 1 | 0 | 0 | 0 |
Category E | 3 | 0 | 0 | 0 | 0 | 0 |
Category F | 0 | 0 | 0 | 0 | 0 | 0 |
Result of case review: Category A: insuff/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Duration 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown
(2D): A 67-year-old female patient with no history of psychosis nor on comedications received mefloquine 250mg/week (exact dates unknown) which was discontinued prior to her leaving for abroad. Some days later she became very confused, and manifested psychotic features, and was hospitalized. She initially recovered within a few days, but psychosis and confusion recurred approximately 5 months later, and she was re-hospitalized, and recovered subsequently. Neurologic examinations were carried out which did not reveal dementia. This report is also included in Group I malaria prophylaxis: psychiatric events: SAE psychotic features, classified as 2D (Appendix 1).
(2D): A 40-year-old male patient was taking lx250mg mefloquine/week for malaria prophylaxis. He had no relevant medical history nor was he taking any comedication. A few days after discontinuation of mefloquine he experienced dizziness, some days later, multidirectional nystagmus was observed, a brain MRI was normal. He then experienced headache, balance difficulties and memory disturbances. When his condition deteriorated he was hospitalized. Brainstem evoked responses were normal as was a spinal fluid exam. Nystagmus resolved after about 6 weeks. Except for headache and dizziness the patient had recovered approximately a further 3 months later.
(3D): (3D): A 23-year-old male patient with no relevant history and no comedications was taking lx250mg mefloquine/week for malaria prophylaxis. He experienced amnesia, but only after discontinuation of mefloquine he consulted his general practitioner about this problem. ACT scan, 24hr blood pressure monitoring, and blood tests (NOS) were all normal. Some months later he was treated with Ubidecarone which remained ongoing, and he slowly recovered. This report is also included in Group I malaria prophylaxis: psychiatric system disorder events: SAE amnesia, classified as 3D.
Comment: While all nervous system disorder events are listed in the CDS, it is also specifically mentioned:" Because of the long half-life of mefloquine, adverse reactions to Lariam may occur or persist up to several weeks after discontinuation of the drug. In a small number of patients it has been reported that dizziness or vertigo and loss of balance may continue for months after discontinuation of the drug.
2) Indication: Malaria Treatment (N = 3; D=0)
3) Indication: unknown ( N = 0 )
Group I I
1) Indication: Malaria prophylaxis (N=225; D=4) two of the cases are already included in Group II malaria prophylaxis: psychiatric events)…
AFC0060
Four patients from category 2 are presented below as they had no explanation other than mefloquine for the occurrence of the relevant event....
| Duration 1 | Duration 2 | Duration 3 | Duration 4 | Duration 5 | Duration 6 |
Category A | 0 | 46 | 4 | 3 | 7 | 48 |
Category B | 2 | 15 | 6 | 4 | 10 | 20 |
Category C | 2 | 2 | 2 | 0 | 1 | 2 |
Category D | 0 | 4 | 0 | 0 | 0 | 1 |
Category E | 45 | 0 | 0 | 0 | 0 | 0 |
Category F | 0 | 0 | 1 | 0 | 0 | 0 |
Result of case review: Category A: insuff/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Duration 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown
(2D): A 24-year-old female patient with a BMI of 18.5 with no relevant medical history nor on comedications took lx250mg mefloquine/week for malaria prophylaxis for a few weeks when she experienced severe panic attacks, dizziness and vertigo, headache, depression, and anxiety. Mefloquine was discontinued, and she was treated with psychotherapy, naproxen, sumatriptan, which gave no relief. The patient had been hospitalized for the SAEs, and citalopram and alprazolam was given. Complete
blood count and liver function tests were all normal. The mefloquine drug level was 0.31 mg/ml. A MRI brain scan was normal. The treatment with alprazolam was maintained, and other unspecified treatment given. Six months later the SAEs were persisting. This report is also included in Group II malaria prophylaxis: psychiatric system disorder events: SAEs panic attacks, anxiety, and depression, classified as 2D (Appendix 3).
(2D): A 42-year-old female patient with no relevant medical history and not taking comedications received mefloquine lx250mg/week for malaria prophylaxis. She took in total two doses and presented with disabling difficulty writing, optic neuritis, blurred vision, a panic reaction, anxiety, nightmares, delusion, memory loss, neurologic symptoms, irrational thinking, depression, demyelination disorder, hemiparesis, dizziness, memory dysfunction, hair loss, nausea, diarrhea, bloating and abdominal cramps. After repatriation she took a third dose of mefloquine, and her condition deteriorated. Brain MRI was normal, and she was treated with cortical steroids, but contracted Herpes zoster in the right C3-C4 thereafter. Her symptoms improved with gabapentin as well as many other medications. At last follow-up her neurological symptoms gradually improved, but dizziness, memory loss and nightmares were persisting. The cause of her symptoms were unclear several theories from mefloquine toxicity to demyelination disorder were discussed. This report is also included in Group II malaria prophylaxis: psychiatric system disorder events: SAE nightmare, classified as 2D (Appendix 3).
AFC0060
(2D): A male patient in his mid twenties with no relevant medical history presented with a panic disorder during the use of lx250mg/week mefloquine for malaria prophylaxis. Within 24 hours of taking the first dose he experienced weakness, gait disturbance, vertigo, fever, confusion, aggressiveness, lethargy, sweating and loss of appetite. One week later he also had severe anxiety with feeling of suffocation and insomnia which worsened progressively. He was hospitalized, all neurological and laboratory tests were normal. He was diagnosed with a panic state and received diazepam. He was repatriated. At that time, his mefloquine level in serum was 200ng%. He was treated with clonazepam and fluoxetine. The events were persisting 9 weeks later, at last follow-up. This report is also included in Group II malaria prophylaxis: psychiatric
system disorder events: SAE confusion, aggressiveness, panic state, classified as 2D (Appendix 3).
(2D): A 57-year-old male patient with a BMI of 27.7 and no relevant medical history took lx250mg mefloquine /week for malaria prophylaxis. Approximately six weeks later he had hypesthesia of the tight. Mefloquine was discontinued 5 weeks
later as planned. Three months later, hypesthesia worsened and extended to the left knee causing slight paresis of the leg. Left-sided mononeuropathy (pt peripheral neuropathy) was diagnosed subsequent to various investigations, and treatment of cytidylic acid/hydroxycobalamin was started. Further six weeks later the symptoms persisted.
Comments: All relevant nervous system disorder SAEs presented above are listed in the CDS, and because of the long half-life it is also mentioned that adverse reactions to mefloquine may occur or persist up to several weeks after discontinuation of the drug.
2) Indication: Malaria treatment N=21; D=0
3) Indication: unknown N=21; D=l
(2D): A 37-years-old female patient with no relevant medical history, no comedication took mefloquine for approximately 2 months, after six weeks upon her return home she experienced a static cerebellar ataxic syndrome and was hospitalized. A lumbar puncture , EMG and an MRI of the brain and spinal cord were normal. No inflammatory syndrome was noted. Two weeks after onset of the events, mefloquine treatment was discontinued. A gradual favourable outcome was reported. The events of ataxia and cerebellar syndrome improved. Consultation six months after onset of the events revealed the patient still had a mild ataxic syndrome of the lower extremeties.
Group III
1) Indication: Malaria Prophylaxis (N=16; D=0)
In addition none of the remaining patients in Group III: malaria prophylaxis qualified for detailed discussion as they failed the review criteria to focus on....
2) Indication: Malaria Treatment (N=l; D=0)
3) Indication: unknown (N=4; D=0)
MAH - Discussion and Conclusion of Drug Safety report 104001
The review of the safety data from Roche's Global Safety Database ADVENT yielded a total of 369 patients reporting 623 medically confirmed psychiatric disorders SAEs, and 309 patients with 436 medically confirmed nervous system disorders SAEs which were selected as described in section 5.2.1 search and selection strategy. These reports are
AFC0060
included in a tabular format in Appendices 1 - 15, according to the reported indication and the selection strategy criteria. All cases have been commented on individually.
According to the search and selection strategy the relevant SAEs, all of them were supposedly having a duration of > = 90 days. In a first step the case reports were then manually reviewed to verify the actual SAE duration, as reported in the narrative and in all report updates. This led to a significant reduction of the number of the reports as is shown in the overall tables presented below. Of all reports included in the psychiatric system disorder group 73 reports had a SAE duration of less than 90 days, as did 70 reports in the nervous system disorder group. In a second step reports with insufficient information were excluded (190/146) as were reports with relevant medical histories, confounding factors, and/or alternative explanations (82/75), with mefloquine overdoses (2/1) and with pre-existing events (3/13). Thus the focus of this report was directed at patients without a relevant medical history (reported as such), not receiving comedications which might impact on SAE duration, receiving appropriate doses of mefloquine according to the indication, and displaying a SAE duration of >= 90 days, which left 17 patients with psychiatric system disorder SAEs, and 8 patients with nervous system disorder SAEs, respectively which had a duration of more than 90 days. By this method 25 cases were identified which were described in detail, and of which some patients presented with both, psychiatric and nervous system disorder SAEs. It may be important to mention that a total of 1073 patients with 1977 psychiatric system disorder adverse events, and a total of 1022 patients with 1699 nervous system disorder adverse associated with the use of mefloquine are stored in the Roche Global Drug Safety database ADVENT and that only 25 of these reports include SAEs with a duration of
more than 90 days in patients who used mefloquine as prescribed, had no relevant medical history or alternative explanations, and were not taking comedications; and only four of these 25 cases presented with a duration of more than one year.
It must be borne in mind that this analysis is mainly based on spontaneous reports (673), whereas only 5 reports originated from studies. Thus, even with fairly detailed
information received on the individual patients, factors such as social environment, personal circumstances, wrongly reported medical history, omitted comedications cannot be excluded. In addition the reporter who provided the case reports to the MAH may not always have been the physician treating the patient in the first place. This is also evidenced by the fact that only one report of a nervous system disorder SAE has been obtained from a country with potential malaria infections, and this report originated from a clinical trial. Some of the reports were also submitted by the reporter months if not years after the relevant SAEs occurred, thus some relevant case details may have been missed. The events were reported after the return from a trip and therefore retrospectively.
Nevertheless it may be concluded from this review that the observed relevant psychiatric and nervous system disorder SAEs of group D (no alternative explanation) patients are listed in the CDS, and as also specified in the CDS that they may persist for a prolonged period of time after discontinuation of mefloquine. In some of the cases it remains unclear whether other unreported factors contributed to the recurrence or persistence of the events.
Patients with a history of depression, psychosis or other major psychiatric disorders seem to be at particular risk of developing psychiatric AEs.
MAH - CONCLUSION:
Based on the review of reports from Roche Global Drug Safety Database ADVENT MAH decided to update the CDS and upgrade the information about the occurrence of neuropsychiatric disorders into the Warnings/Precautions section of CDS. As a further risk mitigation, the contraindication section will be updated not to allow mefloquine prophylaxis in patients with a history of depression and the other major psychiatric
disorders.
AFC0060
Drug Safety Report 105825507
(06 May 2010 until 27 October 2013)
A) SOC Psychiatric Disorder
Group I (N=0)
Group I I
1) Indication: Malaria Chemoprophylaxis (N=14; 0 = 3 )
Of the 14 cases, three cases (AERs ) were substantive
follow-up reports of cases included in DSR 1040001. None of the follow-up reports
included new events fulfilling the inclusion criteria of the current analysis (see
Section 4.1.2). Relevant new information was received in a follow-up report of AER
which reported a negative psychiatric history, temporal relationship of event onset with
mefloquine therapy, and a long-lasting disability (after 3 years the patient was not able to
work full-time). Accordingly this case has been reclassified from category B to D.
Of the 11 initial cases, five cases provided information that allowed further evaluation of
the event duration. In three of these cases (AERs no
risk/contributory factors were identified (category D). One case included insufficient
information for a causality assessment (category A), but concluded that sleep disorder
was persisting (AER ) . In one case (AER
) the patient had a history of
major psychiatric disorders, but the persistence of the event was medically confirmed.
AFC0060
The narratives of these cases are presented below. The remaining cases (AERs ,
and
,
,
,
) did not provide sufficient information for
the assessment of the event duration.
| Duration 1 | Duration 2 | Duration 3 | Duration 4 | Duration 5 | Duration 6 or n/a* |
Category A | 0 | 0 | 1 | 1 | 1 | 0 |
Category B | 0 | 0 | 1 | 0 | 1 | 0 |
Category C | 0 | 0 | 0 | 0 | 0 | 0 |
Category D | 0 | 0 | 1 | 0 | 2 | 0 |
Category E | 1 | 0 | 0 | 0 | 0 | 2 |
Category F | 0 | 0 | 0 | 0 | 0 | 0 |
Result of case review: Category A: insufficient/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Category for SAE duration - 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown or *n/a [not applicable (for suicide cases where onset date is the date of suicide)]
: Major Depression
This spontaneous case concerns a 60-year-old female patient who received mefloquine (250 mg/week) for malaria chemoprophylaxis. She had no psychiatric medical history. Past treatment included doxycycline. No concomitant drugs were reported. She experienced insomnia and low mood about three weeks after start of mefloquine, and depression approximately three months after mefloquine discontinuation. Approximately a month thereafter, she experienced deterioration to psychotic depression, anxiety and
was hospitalized due to agitation and paranoia. She was treated with risperidone, mirtazapine, and lorazepam. About four years after onset of the event, it was reported that the patient had not been the same since use of mefloquine. However, in the followup
information received in psychotic depression had improved, suggesting
an SAE duration of more than three years.
Psychotic disorder, Self injurious behavior
This spontaneous case (reported by a health authority) concerns a 20-year-old male
patient who received mefloquine (250 mg/week) for malaria chemoprophylaxis (started
on an unspecified date in ) . He had a medical history of childhood
asthma, and high blood pressure. No concomitant or past drugs were reported. An
unspecified time after starting mefloquine, he experienced vivid dreams and anxiety.
Reportedly, he was on mefloquine for nine months and experienced events during
respectively four weeks after therapy. A small amount of alcohol caused significant
effects with regard to hallucination and disorientation. An unspecified time thereafter, he
was hospitalized for dehydration and had two episodes of self-harm (PT-self injurious
behavior). An unspecified time thereafter, mefloquine was discontinued for an
unspecified reason. Approximately a month after mefloquine discontinuation, he
experienced psychotic behavior. He was treated with escitalopram and zolpidem. At the
time of reporting ( ) , the events of psychotic disorder, self injurious behavior,
: Delirium, Agitation, Aggression, Suicide attempt
This spontaneous case (reported by a health authority) concerns a 45-year-old male
patient who received mefloquine for malaria chemoprophylaxis. He had medical history
of mesancephalic cerebrovascular accident (CVA) and parinaud syndrome (diagnosedof mesencephalic cerebrovascular accident (CVA) and parinaud syndrome (diagnosed
AFC0060
five years before mefloquine use). Concomitant medications included aspirin dl-lysine
and simvastatin. He was hospitalized due to acute delirious episode (PT-delirium),
agitation, aggressiveness (PT-aggression) and suicidal attempt approximately ten weeks
after starting mefloquine on a business trip to . The patient did not have any past
psychiatric history and did not take any anti-psychotic, antidepressant or any other CNS
drug. The events resolved with sequelae about one month after onset. Sequelae were
not specified. Follow-up information about one year later did not provide new information
on the outcome.
MAH comment: Most of the relevant psychiatric disorder SAEs reported in the cases
assigned to category D are known to occur with mefloquine and are listed in the current
Lariam CDS V. 4.0 [2]. Self-injurious behavior and suicide attempt are not listed but for
these events the provided information is limited and the duration is questionable ("two
episodes", "an attempt to jump out of the window"). Of note is the positive CVA of the
patient in case AER . This case is also included in Section 6.2.1.2.2.1 (Nervous
system disorders is the primary SOC for agitation). Based on the calculation applied to this
group events or sequelae of events persisted from about one to >3 years and in one case
long-lasting impairment of the patient is confirmed by the reporter.
2) Indication: Malaria Treatment (N=1; D = 1 )
One case (AER was identified in this group. This patient experienced
depression, which was resolving 92 days after event onset. No alternative explanations
for the occurrence of the relevant psychiatric disorder were identified (category D 2).
This case is briefly reviewed below.
: Depression
This spontaneous case concerns a 38-year-old female patient who experienced
depression seven weeks after starting and a week after the most recent dose of
mefloquine (250 mg/week). Mefloquine was discontinued and she was treated with
citalopram. The event of depression was resolving at the time of reporting. The patient
did not have a history of psychiatric treatment, alcohol/substance abuse, suicidal
ideation or suicide attempts and family history of suicide, or any recent losses, emotional
upsets or legal trouble.
MAH comment: Given the reported dose, the indication is suggestive of
chemoprophylaxis, rather than treatment. However, depression is a listed event in the
current Lariam CDS V. 4.0 [2]. In this case the patient was on mefloquine for about
seven weeks and for the event duration of about three months (after discontinuation),
the long half-life of mefloquine should be considered.
3) Indication: Unknown (N=1; D=1)
One case (AER ) was identified in this group. This patient experienced an SAE
duration of about five months4and no alternative explanations for the occurrence of
anxiety and panic disorder were identified (category D 2). This case is briefly discussed
below.
Anxiety, Panic disorder, Dizziness, hypoaesthesia
This spontaneous case concerns a 20-year-old male patient who received mefloquinefor an unknown indication. Approximately two weeks after the first dose, he received a second dose of mefloquine (reported as
) and visited on .Approximately two weeks thereafter (end of the experienced anxiety along with nervous system disorder AEs (dizziness and episodic feeling of numbness). Mefloquine was discontinued on and doxycycline was started. An unspecified time after mefloquine discontinuation, he
Updated PRAC rapporteur assessment report on the signal of permanent neurologic
(vestibular) disorders with mefloquine
EMA/63963/2014
AFC0060
experienced episodic panic disorder-type symptoms (PT-panic disorder). Reportedly, the events started upon traveling to India while he was on mefloquine and were triggered by enclosed spaces, and also after returning home by other exciting occasions. He had not experienced similar symptoms or any psychiatric symptoms in the past.
MAH comment: Given the frequency of mefloquine use and patient's traveling, the indication is suggestive of chemoprophylaxis. However, anxiety and panic attacks are listed events in the current Lariam CDS V. 4.0 [2]. The information provided points to a duration of more than four months; however, medical confirmation is limited to a few symptoms. This case has also been discussed in Section 6.2.1.2.2.3.
Group III
1) Indication: Malaria Chemoprophylaxis (N=9: D = 1 )
Of the nine cases, two cases provide information that allowed further evaluation of the
event duration. In one of the nine cases (AER the patient experienced
depression and suicidal ideation with a calculated duration of around 3.5 months and no
alternative explanations were identified for the events (category D). In one case (AER
the duration of psychiatric therapy suggested a long duration of events;
however, this case had insufficient information for causality assessment (category A).
The narratives of these cases are presented below.
The remaining cases AERs (a follow-up report), , ,
did not provide sufficient information for an assessment of the event duration.
'
Result of case review: Category A: insufficient/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Category for SAE duration- 1: SAE < 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown
Suicidal ideation, Depression
This spontaneous case (reported by a health authority) concerns a 37-year-old female patient who received mefloquine for malaria chemoprophylaxis for an unknown duration. No concomitant or past drugs were reported. She did not have a medical history of any psychiatric disorder. Approximately five weeks after starting mefloquine, she developed depression and suicidal ideation (reported as "she wanted to throw herself in front of the metro") while on mefloquine. An unspecified time thereafter, mefloquine was discontinued and at the time of reporting (about three months after onset), the events resolved.
MAH comment: Depression is a listed event in the current Lariam CDS V. 4.0 [2]. In this case, the patient was on mefloquine for about seven weeks. For the event duration of approximately 3.5 months (after discontinuation), the long half-life of mefloquine should
AFC0060
be considered.
2) Indication: Malaria Treatment ( N = 0 )
3) Indication: Unknown (N=1; D=0)
Summary table of case reports of psychiatric disorders
| Duration 1 | Duration 2 | Duration 3 | Duration 4 | Duration 5 | Duration 6 or n/a* | Total |
Category A | 0 | 4 | 3 | 1 | 1 | 0 | 9 |
Category B | 0 | 1 | 1 | 0 | 1 | 0 | 3 |
Category C | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Category D | 0 | 3 | 1 | 0 | 2 | 0 | 6 |
Category E | 19 | 0 | 0 | 0 | 0 | 2 | 3 |
Category F | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 1 | 8 | 5 | 1 | 4 | 2 | 21 |
Result of case review: Category A: insufficient/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Category for SAE duration - 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE > 3 yrs, 6: SAE duration unknown or *n/a [not applicable (for suicide cases where onset date is the date of suicide)]
B) SOC "NERVOUS SYSTEM DISORDERS
A total of 17 cases reporting 24 SAEs were retrieved under the "nervous system disorder" SOC. Of the 17 cases, two cases (five SAEs) were substantive follow-up cases and 15 cases (19 SAEs) were initial case reports. A tabular overview of these initial and follow-up cases is presented below.
Of the 19 SAEs, the latency from first dose was reported as '0-6 days' for nine SAEs (n=9); '1-4 weeks' for four SAEs (n=4); '>1 year' for two SAEs (n=2); '1-3 months' for one SAE and '4-12 months' for one SAE. The latency from first dose was unknown for two SAEs (n=2).
The outcome of the 19 SAEs was reported as: 'recovering/resolving' for six SAEs (n=6); 'not recovered/not resolved' for six SAEs (n=6); 'recovered/resolved' for five SAEs (n=S) and 'recovered/resolved with sequelae' for two SAEs (n=2).
Group I (N=O)
Group II
1) Indication: Malaria Chemoprophylaxis (N=8; D=2)
A total of eight cases were identified in this group. Of the eight cases, six cases were
initial cases and two cases (AERs were substantive follow-up cases
included in DSR 1040001. Both cases reported neurologic and psychiatric events and
were also discussed in Section 6.1.1.2.2.1. However, relevant new information was
received in the follow-up report of case AER only .
AFC0060
This spontaneous case concerns a 28-year-old female patient (BMI: 21.2) who received mefloquine (250 mg/week) for chemoprophylaxis of malaria. No concomitant drugs were reported. The patient did not have any medical history of psychiatric problems and was physically and mentally healthy. She experienced dizziness and hyperesthesia (as well as psychiatric events), which commenced at the start of mefloquine therapy. On an unspecified date, dizziness and hyperesthesia resolved with sequelae. Three years after discontinuation of mefloquine therapy, the patient was still not able to work full-time.
MAH comment: Based on the new information (negative psychiatric history and patient was unable to work full-time for approximately three years after the event onset), this case has been reclassified from category B to D. The psychiatric events of this case are included and discussed in Section 6.1.1.2.2.1.
Of the six initial cases, one patient (AER - experienced SAEs with a duration of more than 90 days and no identified risk factors (category D).The event of interest in this case is agitation, which is a secondary PT in the SOC "Psychiatric Disorders".... (The psychiatric events of this case were also discussed above.)
The remaining cases (AERs ) did not
provide sufficient information for the assessment of the event duration. Of the remaining
cases, one patient (AER ) experienced Parkinson's disease approximately two
years after an overdose of mefloquine (category C and category F).
2) Indication: Malaria Treatment (N=2; D=0)
3) Indication: Unknown (N=2; D=1)
Two cases were identified in this group. One of these two cases (AER ) had
possible risk/contributory factors for the events (category B; underlying thymoma and
positive acetylcholine receptor antibodies, suggesting autoimmune etiology of myesthenia
gravis for the event of muscular weakness). In the other case (AER t h e patient
experienced an SAE duration of more than 90 days and no risk factors were identified for the
SAEs (category D).
(The psychiatric events of this case were also discussed above.)
1) Indication: Malaria Chemoprophylaxis (N=3; D=O)
3) Indication: unknown (N=2; D=l)
Two cases were identified in this group. In one of the two cases (AER ) the
patient received an accidental overdose of mefloquine and experienced generalized
convulsions (PT-convulsions) with inhalation stop and cardiorespiratory stop for a few
seconds, which was recovered after aspiration. This information points to a short
duration of the events including convulsion after overdose (category F). In the other case
(AER the patient experienced vertigo and no alternative explanations were
provided. A short narrative of this case is presented below.
Vertigo
This spontaneous case (reported by a health authority) concerns a 50-year-old female
patient who received mefloquine for an unknown indication. She had medical history of
opthalamic migraine. Concomitant medications included acetylcellulose. Past drugs
included Seglar and propranolol hydrochloride. One day prior to starting mefloquine, the
patient experienced unspecified infectious syndrome with fever (39°C) and started
mefloquine at a dose of 6 dose forms a day and on the same day experienced vertigo.
AFC0060
Mefloquine was discontinued on the same day. Four days after onset, the patient was no longer febrile, but vertigo persisted. Later (date not specified), the event resolved.
MAH comment: Given the dose of mefloquine the indication is suggestive of malaria treatment. Although the medical history of ophthalmic migraine and underlying influenza (confirmed by laboratory investigation) need to be considered risk factors, persistence of vertigo in an afebrile patient and short drug-event latency suggests a possible role of mefloquine used at therapeutic dose. Vertigo, including persistence for months, is listed in the current Lariam CDS V. 4.0 [2]. In this case the patient received a high dose and for the calculated event duration of maximal 4.5 months, the long half-life of mefloquine should be considered.
Summary table of case reports of nervous system disorder (2 cases of category D are already mentioned under the SOC psychiatric disorder)
Category A | 0 | 2 | 1 | 1 | 1 | 0 | 5 |
Category B | 0 | 2 | 0 | 0 | 1 | 0 | 3 |
Category C | 0 | 0 | 2 | 0 | 0 | 0 | 2 |
Category D | 0 | 2 | 1 | 0 | 0 | 0 | 3 |
Category E | 1 | 0 | 0 | 0 | 0 | 0 | 1 |
Category F | 0 | 1 | 0 | 0 | 0 | 0 | 1 |
Total | 1 | 7 | 4 | 1 | 2 | 0 | 15 |
Result of case review: Group A: insufficient/controversial data, B: alternative explanation, C: SAE occurred > 6 months after mefloquine discontinuation, D: no alternative explanation, E: out of scope of the review, F: overdose. Event persistence: Category 1: SAE< 90 d, 2: SAE 90 d to 1 yr, 3: SAE 1 yr to 2 yrs, 4: SAE 2 to 3 yrs, 5: SAE> 3 yrs, 6: SAE duration unknown
SMQ "VESTIBULAR DISORDERS"
(Cumulative search: cut- off date 27 October 2013)
A total of 88 cases (95 SAEs) were retrieved. The most frequently reported SAEs (PT) were dizziness (58 SAEs), vertigo (21 SAEs), and balance disorder (14 SAEs). Of the 88 cases, 86 were spontaneous reports, and the remaining 2 were literature reports.
Overall six of the 88 cases were classified in Category D (DSR 104001:
, DSR 105825507: I and I Case I: see below)
Group I (N=O)
Group II (N=3; D=1)
A total of three cases were identified in this group (AERs . In two cases, the indication was malaria chemoprophylaxis (AERs in the remaining case (AER the indication was unknown.
Two of these cases were classified as Category E since the duration of events was reported to last less than 90 days. In one of these two cases (AER , the relevant SAE (PT: vertigo) resolved after 4 weeks. In the other case (AER , the relevant SAE (PT: vertigo) resolved after 1 day. In the remaining case (AER , the event duration was 611 days. This case was classified as category D. A narrative of this case is presented below.
AER Dizziness
This spontaneous case was reported by a health care professional, and concerns a 43-year-old female who took mefloquine for malaria chemoprophylaxis. No medical history or previous medications were reported. No concurrent medications or conditions were reported. Mefloquine (250 mg/week p.o.) was started. The patient experienced dizziness, agitation, and insomnia. The latency of these events was reported as <12 hours.
Mefloquine was discontinued 3.5 weeks later. At the time of reporting, the events were described as improving but persisting.
MAH comment: Dizziness is a listed event in the current Lariam CDS V. 4.0 [2]. Limited information is provided e.g. regarding the event cessation date. However, no alternative explanations were identified and the SAE duration was calculated to be 1. 7 years.
Group III (N=O)
AFC0060
PT "TINNITUS"
(Cumulative search: cut- off date 27 October 2013)
A total of 16 cases (16 SAEs) were retrieved under the PT "Tinnitus". Of all 16 cases, none was classified in Category D.
EVIDENCE FROM LITERATURE REGARDING THE DRUGEVENT ASSOCIATION
A total of 537 literature articles were retrieved from the cumulative search as described in Section 5. Of those, one literature case report was found to be relevant for the current addendum DSR and is summarized below.
This literature case report, reported by Nevin [ 4], concerns a previously healthy 24-yearold male patient, with no relevant medical history, no drug allergies, no history of mental health disorder, use of psychotropic medication, or head injury. After joining an army group in Spain from his home in the United States, he had been directed to take generic mefloquine for chemoprophylaxis under supervision while he remained on standby for
short notice travel to Africa. Reportedly, within 12 hours of taking first 250 mg dose of mefloquine, he experienced unease, anxiety, and foreboding, which increased over the next two days. By the third day he experienced "intermittent mumbling auditory hallucinations" and a sense of the "presence of a nearby nondescript female". Shortly after the second dose, he was noted to be paranoid, distant, and confused, with a markedly changed personality. Soon after the third dose, he became troubled by the onset of impairment in short-term spatial and working memory, as well as tinnitus, palpitations, and an intermittent lateral "wavy" vertigo which worsened after his fourth dose. Vertigo evolved to include a sensation of intermittent rotation. Two weeks after discontinuing mefloquine, the patient complained of persistent auditory hallucinations, and described his state as "delirious" and "confused", with a "loss of sensation", which he described as "no emotions and no intellectual stimulation". He complained of being "restless", obtaining less than four hours of sleep per night, suffering "memory loss, personality change, and irritable mood" and of being "angry" and "aggressive". Over subsequent weeks and months these psychiatric symptoms and his sleep disturbances gradually decreased in frequency and severity, and his physical symptoms including palpitations, tinnitus, vertigo, and disequilibrium became relatively more prominent.
Vestibular testing (videonystagmography, opticokinetic testing, motor control test,
saccades, and pursuits) were grossly normal. Right-sided vestibular evoked myogenic potentials were enhanced relative to the left. Computerized dynamic posturography revealed a pattern of global dysfunction with falls during sensory organization tests 5 and 6 that were considered aphysiologic. Approximately six months after symptom onset
the patient's hallucinations had fully resolved, but he reported continued deficits in short term spatial and working memory with rare episodes of spatial disorientation described as "dizzy" spells, with episodes of tinnitus, vertigo and severe disequilibrium occurring
approximately every day to every other day without a clearly identifiable cause, frequently heralded by frontal headache, and occasionally associated with palpitations and anxiety. Ten months after symptom onset and at the conclusion of reported followup, the patient's improvement had plateaued. He remained restricted from driving due to persistent episodes of vertigo and disequilibrium.
The author concluded that the strong temporal association reported in this case between the use of mefloquine and the onset of anxiety, paranoia, psychosis, dissociation and
AFC0060
short-term memory impairment, accompanied by chronic disequilibrium and vertigo, is consistent with the development of a progressive limbic encephalopathy and an associated, likely multifocal brainstem injury caused by exposure to the drug. He argued that adverse reactions to mefloquine may occur even among patients without contraindications to the drug, and that these reactions may occur after administration of only a single 250 mg tablet. He hypothesized neuronal gap junction blockade and direct neurotoxity as potential mechanism.
MAH comment: The patient took a generic version of mefloquine. His psychiatric symptoms and sleep disturbances gradually decreased in severity and frequency within a few months of their onset. Six months after the onset of events, episodes of tinnitus, vertigo and severe disequilibrium were persisting. Approximately ten months after the onset of events, the patient remained restricted from driving due to persistent vertigo and dysequillibrium. The patient did not have medical history of any psychiatric disorder or any other relevant medical history. A causal role of mefloquine in the occurring events cannot be excluded.
MAH's overall discussion and conclusion
The safety profile of mefloquine is characterized by a predominance of neuropsychiatric AEs, which is indicated in the current Lariam CDS V. 4.0 [2]. Therefore, the purpose of the current addendum DSR was to evaluate the evidence of neuropsychiatric SAEs that were at least 90 days or longer in duration, including those reported as persisting for at least 1 year.
Cases classified as category D (no alternative explanation) were considered the most suitable for the analysis; however, cases with alternative explanations (category B) and limited information (category A) were also included into the evaluation of the event duration as long as strong evidence for persistence was given. In this context an event with a calculated duration of more than one year was considered to be persistent.
The duration of SAEs were calculated based upon SAE onset date and company received date. It is a considerable limitation to this analysis that no SAE cessation date or exact event duration was reported for any of these SAEs (no cases in group I). In a few cases, the event description did allow verification or correction of the calculated duration, and in some cases the corrected value was actually shorter than the originally calculated duration (e.g. AERs
In DSR 1040001, 369 cases with 623 medically confirmed psychiatric disorder SAEs, and 309 cases with 436 medically confirmed nervous system disorder SAEs were retrieved. Of all cases, four were classified as category D (no alternative explanation), and presented with an SAE duration of more than one year. An additional 79 cases from the categories A (insufficient information) and B ( cases with alternative explanations) also provided evidence for an event duration of more than one year.
Since the cut-off date of DSR 1040001 (cut-off date 06 May 6 2010), a total of 34 cases, with 25 cases reporting 46 SAEs from the SOC "Psychiatric Disorders", and 17 cases with 24 SAEs from the SOC "Nervous System Disorders" fulfilled the search criteria. The criteria were defined to retrieve serious, medically confirmed cases with an event duration of more than 90 days reported to the MAH within the period of 07 May 2010 - 27 October 2013.
AFC0060
Of the identified cases, four cases provided follow-up information to cases already included in DSR 1040001; however, relevant new information was received in one follow-up report (AER •• 11). Based on the new information (negative psychiatric
history, patient unable to work full-time for three years after event onset), this case was reclassified from category B to D. For the data set of DSR 1040001, this meant an increase from 17 to 18 patients with psychiatric disorder SAEs, and from 8 to 9 patients with nervous system disorder SAEs, who suffered from their events for more than 90
days with no alternative explanation for the events (category D). The number of cases presented with a duration of more than one year increased in this analysis from four to five cases.
In six of the 21 new, initial cases reported under the SOC "Psychiatric Disorders," no alternative explanation was identified for the SAEs ( category D). Three of these cases provided strong evidence for psychiatric event duration for more than one year (AER
major depression >3 years; AER••• psychotic disorder >3 years; AER delirium, agitation aggression [sequelae] >1 year).
An additional three cases from the categories A and B also provided some evidence for event duration of more than one year. Although these cases provided limited information (AER sleep disorder >3 years;AER- dissociation, psychotic disorder, anxiety, and delusion with psychiatric therapy for >1 year) or a psychiatric history (AER
anxiety >3 years), a contributing role of mefloquine to the persistence of these events cannot be excluded.
In three of the 13 new, initial cases reported under the SOC "Nervous System Disorders," no alternative explanation was identified for the SAEs (category D).The only case with a calculated duration of more than one year was already discussed above, as the event of interest was agitation (included in the SOC "Psychiatric Disorders"). In
from category A also provided some evidence for
event duration of more than one year. Although this cases provided limited information (AER I: myoclonus >3 years), a contributing role of mefloquine to the persistence of this event cannot be excluded.
The analysis of the current addendum DSR showed that few additional cases with information on the duration of events were received during the follow-up period (07 May 2010-27 October 2013). Of the 34 cases, six cases provided evidence on persistence of neuropsychiatric events for more than 1 year, and in 50% of these cases no evidence for a causal relationship could be established. However, in the remaining cases, a close temporal relationship between onset of events and mefloquine therapy and the lack of alternative explanations suggested a possible role of mefloquine.
Overall, cumulatively 91 cases contained evidence on neuropsychiatric SAEs that were at least 1 year or longer in duration.
The current addendum DSR also provides a cumulative review of persistent or permanent neurologic (vestibular) disorder events in patients receiving mefloquine. Cumulatively, a total of 88 cases with 95 SAEs for the SMQ "Vestibular Disorders" and 16 cases with 16 SAEs reporting the PT "Tinnitus" were retrieved according to the defined search criteria (to include serious, medically confirmed cases with an event
duration of >90 days; some patients were counted twice as due to the multiaxial search vestibular disorders, including tinnitus, are also covered within the psychiatric and nervous system disorder SOC).
No alternative explanation (category D) was identified for the SAEs in six of the 88 cases reported for the SMQ "Vestibular Disorders." One of the six cases provided evidence for an SAE duration of more than 1 year (AER . The patient experienced dizziness
AFC0060
that lasted for 611 days. No cases reporting 'Tinnitus' were identified for category D.
An additional 13 cases for the SMQ "Vestibular Disorders" and for the PT "Tinnitus" from
the categories A and B provided evidence for SAE duration of more than 1 year. Eight
cases provided limited information (AER : dizziness >2 years; AER
dizziness >2 years; AER : dizziness >6 years; AER b a l a n c e disorder,
vertigo >5 years; AER : vertigo >6 years; AER v e r t i g o >11 years; AER
: dizziness >2 years; AER : dizziness, tinnitus >5 years) and confounders
were reported in four cases (relevant medical history, concomitant medication; AER
: vertigo >1 year; AER : balance disorder >3 years; AER
dizziness >5 years; AER : vestibular disorder >7 years). However, an association
between mefloquine and the persistence of these events cannot be excluded.
One of the 537 retrieved literature articles was included in the current addendum DSR.
This article concerned one patient who experienced psychiatric symptoms, sleep
disturbances, disequilibrium, vertigo and tinnitus after taking a generic version of
mefloquine, with short drug-event latencies. Psychiatric symptoms and sleep
disturbances gradually decreased in severity and frequency within a few months of their
onset. However, the events of vertigo and dysequillibrium were persisting approximately
ten months after the onset of events. No risk factors were identified in this case.
Based upon the assessment in DSR 1040001 (cut-off date 06 May 2010), the MAH
amended the Lariam CDS regarding the duration of neuropsychiatric disorders into the
"Warnings and Precautions" section. The information that adverse reactions to Lariam
may occur or persist up to several weeks after discontinuation of the drug and that
dizziness or vertigo and loss of balance may continue for months after discontinuation of
the drug was added.
The analysis provided in the current addendum DSR (DSR 1058255, cut-off date 27
October 2013) confirms this outcome for most of the cases; however, longer duration or even persistence of such adverse reactions in a small proportion of patients may be possible.
Based on this review, including case reports from the Roche Global Drug Safety Database ARISg, the MAH will amend the "Warnings and Precautions" section of the current Lariam CDS V. 4.0 to include information on the persistence of certain neuropsychiatric events after discontinuation of the product.
MAH' s proposed changes of section 4.4 and 4.8 of the approved CSP:
4.4 Special warnings and precautions for use
AFC0060
(see section 4.3).
4.8 Undesirable effects
a) Summary of safety profile
At the doses given for acute malaria, adverse reactions to mefloquine may not be distinguishable from symptoms of the disease itself. In chemoprophylaxis, the safety profile of mefloquine is characterised by a predominance of neuropsychiatric adverse reactions. Due to the long half-life of mefloquine, adverse reactions may occur or persist up to several weeks after discontinuation of the drug. Of the most common adverse reactions to Lariam chemoprophylaxis, nausea, vomiting, and dizziness are generally mild and may decrease with prolonged use, in spite of increasing plasma drug levels.
2.2. Rapporteur's position
• This DSR report described 17 case reports of Psychiatric Disorders in category D 2; 3 and 4 (cases without an alternative explanation and a known duration). Furthermore three additional reports of Nervous System Disorders were reported in category D2 and 3. Patients who were already presented under the SOC psychiatric disorders are not double calculated. Additionally four other cases
have to be assigned to this group.
• Most of the 24 cases (20) had a duration between 90 days and 1 year (in 7 cases the SAE resolved; and in 13 cases the SAE were still ongoing at the last follow up). In four cases the events had a duration over a year (in one case the patient recovered within this time; in another case the SAE slowly resolved during this period, in one case the symptoms were persisting over a time of 2 to 3 years and one patient recovered over a time of 2 to 3 years).
• The second drug safety report regarding long lasting neuropsychiatric adverse reactions with the period May 2010 until 27 October 2013 describes six cases of psychiatric disorders in category D and one additional case of nervous system
AFC0060
disorder in category D. Patients who were already presented under the SOC psychiatric disorders are not double calculated. In four cases the symptoms had a duration between 90 days to 1 year; two cases were reported with continuance of 2 to 3 years and one case with duration over 3 years. Additionally one follow up with relevant new information was received during this period. As a result the number of cases presented with a duration of more than one year increased in this analysis from four to five cases.
• The DSR 104001 (period 1984 until 6 of May 2010) with an exposure of over 34 Mio patients presented 25 category D case reports of long lasting neuropsychiatric adverse reactions (without double calculations). In contrast seven category D cases of long lasting neuropsychiatric adverse reactions (without double calculations) were submitted with the three-year DSR 105825507 and an exposure of over 3 Mio patients.
• Considering the intensive increase of category D cases in comparison with the former DSR especially regarding reports with a duration over two years and the data presented in the FDA assessment, an update of product-information to include permanent/persistent neuropsychiatric adverse events is strongly required.
There is enough evidence from the presented drug safety reports, the submitted literature report and the FDA assessment report supporting a causal relationship between mefloquine and the occurrence of long lasting and even persistent neuropsychiatric side effects.
Additionally based on the pharmacodynamic profile of mefloquine, the neuropsychiatric side effects of Lariam can be explained to a large extent by the neuro(patho)physiology and can be predicted by mechanistic aspects as well.
In consideration of this and the increase of case reports with long lasting side effects, there is a strong suspicion that mefloquine can cause different kind of permanent brain damage, even under plasma concentration achieved in malaria prophylaxis.
No specific risk factors - dosage, duration etc. could be identified. For that reason, only the advice - to stop taking mefloquine if neuropsychiatric reactions or changes to their mental state occur - can be given as precautionary measure.
The current wording regarding the continuance of neuropsychiatric side effects in section 4.4 and 4.8 of the SmPC and the respective section of the PIL should be updated as follows:
3.1. Changes to the product information
4.4 Special warnings and precautions for use
AFC0060
4.8 Undesirable effects
a) Summary of safety profile
At the doses given for acute malaria, adverse reactions to mefloquine may not be distinguishable from symptoms of the disease itself. In chemoprophylaxis, the safety profile of mefloquine is characterised by a predominance of neuropsychiatric adverse reactions. Due to the long half-life of mefloquine, adverse reactions may occur or persist up to several weeks after discontinuation of the drug. Of the most common adverse reactions to Lariam chemoprophylaxis, nausea, vomiting, and dizziness are generally mild and may decrease with prolonged use, in spite of increasing plasma drug levels.
PL:
The PL should be updated accordingly.
n/a
Based on this relevant new information on permanent side adverse reactions a DHPC is recommended on national level. (The existing Educational material should be updated accordingly.)
We endorse conclusions in PRAC Rapporteur AR.
We fully agree with the Rapporteur assessment. However we would like to underline several points:
AFC0060
information regarding the wording "up to several months" is applicable for persistence and occurrence. Therefore we would prefer to keep the wording in sections 4.4 and 4.8.
Based on these previous comments, we propose the following modifications for SmPC:
4.4 Special warnings and precautions for use
4.8 Undesirable effects
a) Summary of safety profile
At the doses given for acute malaria, adverse reactions to mefloquine may not be distinguishable from symptoms of the disease itself. In chemoprophylaxis, the safety profile of mefloquine is characterised by a predominance of neuropsychiatric adverse reactions. Due to the long half-life of mefloquine, adverse reactions may occur or persist up to several weeks months after discontinuation of the drug. Of the most common adverse reactions to Lariam chemoprophylaxis, nausea, vomiting, and dizziness are generally mild and may decrease with prolonged use, in spite of increasing plasma drug levels.
3rd February 2025
[1] Sanctuary Trauma: “occurs when an individual who suffered a severe stressor next encounters what was expected to be a supportive and protective environment’ and discovers only more trauma.”
[2]Manufactured doubt describes the efforts used by organisations or individuals to obscure the harmful effects of their products or actions by manipulating science. Although approaches to do so are widely used, relevant stakeholders are often unaware of these tactics [PubMed]