16 personnel required psychiatric treatment after taking drug . They were prescribed anti-malarial drug Lariam by the Ministry of Defence . The product 's side effects include psychosis and hallucinations . Retired Major General Alastair Duncan is currently in a psychiatric unit . He was prescribed the drug prior to a deployment in Sierra Leone .
Almost 1,000 personnel required psychiatric treatment after taking drug . They were prescribed anti-malarial drug Lariam by the Ministry of Defence . The product 's side effects include psychosis and hallucinations . Retired Major General Alastair Duncan is currently in a psychiatric unit . He was prescribed the drug prior to a deployment in Sierra Leone .