Written Question·Department of Health and Social Care·UIN 104605

Mefloquine: Veterans

Tabled: 12 January 2026

Answered: 21 January 2026

Named Day

Question

Sir Julian Lewis

To ask the Secretary of State for Health and Social Care, what steps he has taken with the Secretary of State for Defence to ensure that NHS practitioners are informed of the vulnerability to suicidal ideation of veterans impacted by Lariam; and what step

Answer

Dr Zubir Ahmed

The Medicines and Healthcare products Regulatory Agency (MHRA) has updated its safety advice on mefloquine to reflect the risk of neuropsychiatric side effects, advising that it should not be used for chemoprophylaxis in individuals with a history of psyc...

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