Amphetamine is a drug of abuse that produces a euphoric effect 10 times that of cocaine. It is taken orally or by injection and its effects last 10-16 hours. The fatal dose is 150mg to 2gm and death occurs within 2-4 hours. Some amphetamine users collect and sell the urine of other users, which is golden yellow in color and contains 40% of unchanged amphetamine, on the black market. Psychedelic drugs like LSD and ecstasy can cause hallucinations referred to as a "trip", which can be pleasant or disturbing. LSD trips last about an hour but after effects may persist for weeks and potentially lead to violence or suicide. Flashback episodes can occur after