How did the psychedelic drugs LSD and Ecstasy journey from a scientific discovery to a popular recreation to banned drugs? Mental health professionals once believed that LSD could treat schizophrenia or alcoholism. Meanwhile, Ecstasy, the "penicillin for the soul", was used in marriage counseling. Now, continuing the cycle of the hallucinogen, some of the latest derivatives in this category of drugs, the "rave" drugs such as GHB and Ketamine, are about to be banned.