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There is no official mefloquine VA disability rating. Instead, the VA rates the diagnosed condition caused by the drug, such as anxiety, vertigo, tinnitus, or neurological disorders.
If you were prescribed mefloquine (brand name Lariam) during your military deployment and now struggle with anxiety, vertigo, tinnitus, depression, cognitive problems, or seizures, you may qualify for VA disability compensation.
But you can’t simply claim “mefloquine toxicity” because it’s not a VA-recognized condition. Instead, the VA rates the diagnosed condition caused by the medication.
Some veterans took mefloquine, which carried a risk of persistent neurological and mental health side effects. If your symptoms began during or after taking the medication, you may be entitled to VA disability compensation.
In this post, we’ll explain exactly how the mefloquine VA disability rating works, how ratings are assigned, and how to file a claim.
Summary of Key Points
- There is no standalone mefloquine VA disability rating; the VA rates the diagnosed condition(s) caused by the medication, not the drug itself.
- Mefloquine-related conditions are not presumptive, so you must prove direct service connection.
- Commonly rated conditions include mental health disorders, vertigo and balance disorders, tinnitus, and seizure disorders.
- Strong medical evidence — including a current diagnosis and a medical nexus opinion using the “at least as likely as not” standard — is critical to winning your claim.
Table of Contents
What is Mefloquine?
Mefloquine is an antimalaria drug that was given to service members to prevent malaria.
In 2013, the FDA issued a boxed warning for mefloquine due to the risk of persistent neurological and mental health side effects, including anxiety, depression, hallucinations, and balance disorders. Medical literature has documented that some effects may continue even after discontinuation.
Mefloquine toxicity refers to symptoms caused by the drug, including:
- Nausea, vomiting, diarrhea, dizziness
- Difficulty sleeping, bad or vivid dreams
- Convulsions or seizures
- Restlessness, confusion, unusual behavior
- Mood changes or agitation
- Suicidal thoughts and behavior
What is the Mefloquine VA Disability Rating?
There is no VA diagnostic code for mefloquine or mefloquine toxicity.
Instead, the VA rates the specific medical condition or conditions caused by the drug under the VA Schedule for Rating Disabilities.
Depending on your current diagnosis and the severity of your condition, the rating may range from 0% to 100%, in 10% increments. Ratings are based on the degree to which a service‑connected condition affects function, including occupational and social impairment, as defined by the criteria in the VA Schedule for Rating Disabilities.
You must prove service connection for a successful claim.
Is Mefloquine a Presumptive VA Disability?
No. Mefloquine-related conditions are not on the VA presumptive list. That means you must prove direct service connection based on the following requirements:
- Proof that you were prescribed mefloquine during active duty, and
- Proof of a current diagnosed condition, and
- A medical nexus linking the two.
Unlike Agent Orange or Gulf War presumptives, the connection to service is not automatic.
What Conditions Does the VA Rate for Mefloquine Claims?
The VA evaluates the diagnosed condition, not the medication itself. Some of the most common rating pathways include:
Mental Health Conditions
Mental health disorders are rated under 38 CFR § 4.130.
This includes:
- Other trauma-related disorders
Ratings are based on occupational and social impairment, not just the presence of symptoms.
General Rating Formula for Mental Disorders | DC 9201-9440
| Criteria | VA Rating |
| Total occupational and social impairment | 100% |
| Occupational and social impairment, with deficiencies in most areas | 70% |
| Occupational and social impairment with reduced reliability and productivity | 50% |
| Occupational and social impairment with occasional decrease in work efficiency and intermittent periods of inability to perform occupational tasks | 30% |
| Occupational and social impairment due to mild or transient symptoms | 10% |
| A mental condition has been formally diagnosed, but symptoms are not severe enough either to interfere with occupational and social functioning or to require continuous medication. | 0% |
>> For a deeper breakdown, see our full VA Mental Health Rating Chart (2026 Update).
Vertigo and Balance Disorders
Chronic dizziness may be rated under Diseases of the Ear (38 CFR § 4.87).
Peripheral vestibular disorder, for example, is rated at 10% for occasional dizziness or 30% for dizziness with occasional staggering.
If diagnosed with Meniere’s syndrome, ratings may be higher depending on severity.
Learn more in our VA Disability Ratings for Vertigo (Up to 100%) post.
Tinnitus
Tinnitus is rated at a maximum of 10%, also under Diseases of the Ear.
While capped, tinnitus can significantly impact sleep, concentration, and anxiety. A tinnitus rating may also support secondary mental health claims.
Seizure Disorders or Neurological Conditions
Seizures are rated under § 4.124a Schedule of ratings—neurological conditions and convulsive disorders.
Ratings depend on the frequency and type of major and/or minor seizures.
Seizure conditions are rated from 10% to 100%. Severe conditions may qualify for high disability percentages.
How the VA Assigns Your Percentage
The VA does not rate based solely on a current diagnosis.
It evaluates:
- How symptoms impact work
- How symptoms affect relationships
- Frequency and duration of episodes
- Whether symptoms are controlled by medication
- Whether symptoms interfere with daily functioning
For mental health claims, occupational and social impairment are the key standards.
For neurological conditions, episode frequency often drives the rating.
Why Mefloquine VA Claims Get Denied
Understanding denial risks helps you avoid them. Common reasons for mefloquine VA denials include:
- No Documentation of In-Service Prescription
If your Service Treatment Records don’t show mefloquine use, the VA may deny the in-service element.
- No Current Diagnosis
Symptoms without a formal current diagnosis are not ratable.
- Weak or Missing Nexus Opinion
The provider must use VA’s legal standard: “At least as likely as not.”
- Symptoms Attributed to Other Causes
Examiners may attribute symptoms to PTSD, stress, or unrelated conditions.
- Lack of Functional Impairment Evidence
The VA rates for the disability, not just exposure.
PTSD vs. Mefloquine: Why Symptom Overlap Matters
The neurological and mental health side effects of mefloquine can resemble:
- PTSD
- Anxiety disorders
- Depression
- Sleep disturbances
This overlap can complicate compensation and pension (C&P) exams.
If you were diagnosed with PTSD after deployment but also took mefloquine, your provider should evaluate:
- Timeline of medication use
- Symptom onset
- Whether symptoms began during or after taking the drug
Clear medical analysis can prevent misattribution.
C&P Exam
If you file a claim, the VA may schedule a compensation and pension exam. At the exam, the evaluator will:
- Review your service records
- Confirm your current diagnosis
- Assess severity
- Evaluate functional impact
- Provide a nexus opinion
Before you attend this exam, be prepared to discuss your worst-day symptoms and how your symptoms impact your work and relationships. It’s important to be detailed and honest about your experiences and not to minimize your limitations.
How to Strengthen Your Mefloquine VA Disability Claim
Step 1: Confirm In-Service Prescription
Request your Service Treatment Records and pharmacy history through the National Personnel Records Center.
Step 2: Obtain a Clear Current Diagnosis
Your provider must formally document the condition.
Step 3: Secure a Strong Nexus Opinion
A strong medical opinion should:
- Confirm your current diagnosis
- Confirm documented in-service prescription
- Reference known side effects
- Use the VA probability standard (“at least as likely as not”)
Step 4: File Your Claim
Submit VA Form 21-526EZ online, or download and mail, fax, or submit in-person at a regional facility.
If denied, you may pursue an appeal through Supplemental Claim, Higher-Level Review, or Board Appeal.
What To Do Next
If you believe mefloquine contributed to ongoing neurological or psychiatric symptoms:
- Request your service records
- Get evaluated by a qualified provider
- Obtain a medical nexus opinion
- File your claim with supporting evidence
The VA evaluates documented disabilities — not exposure alone. Strong evidence is the foundation of a successful claim.
Conclusion
If you were prescribed mefloquine during service and now struggle with lasting mental health or neurological symptoms, you may qualify for VA disability compensation.
Remember: there is no standalone mefloquine VA disability rating. The VA rates the diagnosed condition caused by the medication — whether that falls under mental health criteria, ear disorders (balance or dizziness), or neurological conditions.
You served in high-risk environments and followed military medical guidance. If that guidance caused lasting harm, you have the right to pursue compensation.
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FAQs | Frequently Asked Questions
How is a mefloquine VA disability rating determined?
A mefloquine VA disability rating is not based on the drug itself, but on the diagnosed condition caused by mefloquine. Ratings generally fall under mental health, neurological, vestibular, or tinnitus conditions, and can range from 0% to 100%.
Strong documentation and a clear medical nexus are critical to securing the maximum rating you deserve.
Does the VA compensate for mefloquine toxicity?
Yes, but only for diagnosed disabilities caused by it. There is no standalone rating for the drug itself.
Is mefloquine a VA presumptive condition?
No. Direct service connection is required for claims related to mefloquine exposure.
What rating can I receive for a mefloquine VA disability?
Ratings may range from 0% to 100%, depending on the diagnosed condition and severity.
What if I experience severe mental health symptoms from mefloquine?
If you are experiencing suicidal thoughts or an emotional crisis, contact the Veterans Crisis Line by dialing 988 and pressing 1, or visit VeteransCrisisLine.net immediately.
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About the Author
Katie McCarthy
Katie McCarthy is a writer and editor with experience in daily news and digital and print magazine publishing. She honed her editorial (and firearms) skills at Guns & Ammo before helping launch Black Rifle Coffee Company’s Coffee or Die Magazine as the managing editor. She holds degrees in English (BA) and public administration (MPA). Katie is a military spouse and word nerd who enjoys reading, hiking, camping, gardening, and spending time with her family.
