The main ingredient in Lariam is mefloquine, an antimalarial substance that reduces your risk of malaria. It is not known exactly how mefloquine works, but it is effective in preventing malaria caused by the malaria parasite.
Every Lariam tablet contains 250mg mefloquine.
Mefloquine can not be taken by patients who are suffering from a mental health problem, such as depression or schizophrenia.
If you experience side effects such as depression, paranoia or hallucinations during your treatment, seek medical help immediately.