LSD

Lysergic acid diethylamide, LSD, LSD-25, or acid, is a semisynthetic psychedelic drug of the ergoline family. Its unusual psychological effects, which include visuals of colored and crawling geometric patterns, and a sense of time distortion have made it one of the most widely known psychedelic drugs. It has been used mainly as an entheogen, a tool to supplement various practices for transcendence, including in meditation, psychonautics, art projects, and (formerly legal) psychedelic therapy, and as a recreational drug. Formally, LSD is classified as a hallucinogen of the psychedelic type. LSD's effects normally last from 6–12 hours depending on dosage, tolerance, body weight and age - Sandoz's prospectus for "Delysid" warned: "intermittent disturbances of affect may occasionally persist for several days."