SIDE EFFECTS INCLUDE POTENTIALLY LONG-TERM MENTAL PROBLEMS:
Suicidal ideation, depression, hallucinations, anxiety and neurological
side effects such as, seizures, ringing in the ears, agitation, restlessness,
mood swings, panic attacks, confusion, hallucinations, aggression,
and psychosis. Other neurological symptoms, such as
dizziness and headache are relatively common.
People who have, or have had, any mental
health condition or seizure disorder
should not take mefloquine.
Notice all the Fs (fluorine)
See also Wikipedia