A case report of amphetamine psychosis in a 16-year-old female that closely resembled paranoid schizophrenia following the possible ingestion of a large quantity of amphetamine tablets is presented. The symptoms associated with amphetamine psychoses, the criteria used for differentiating amphetamine psychoses from schizophrenia, and the treatment of this drug-induced reaction are discussed. Treatment recommendation include the use of a dopamine antagonist such as haloperidol and the use of ascorbic acid to accelerate the renal elimination of amphetamines.