Question to the Ministry of Defence:

To ask Her Majesty's Government what assessment they have made of neurotoxicity resulting from the administration of mefloquine to military personnel; and what steps they have taken to ensure that veterans suffering from mental health problems are not given drugs that may exacerbate their illness due to a reaction with mefloquine.

There is no established evidence of prophylactic drugs having long-term side effects causing mental health issues.

The Royal College of Psychiatrists' 'Good Psychiatric Practice' report states clinicians must "be competent in obtaining a full and relevant history that incorporates developmental, psychological, social, cultural and physical factors". This includes the consideration and assessment of the effect of medication and the circumstances in which it is being prescribed.