Dimethyltryptamine (dmt) is a powerful psychedelic drug, and a type of tryptamine alkaloid. It is a naturally occurring substance, found in various plants and animals, and in small quantities in the human brain, where its function is unknown. Dmt is famous for its power. Though the psychedelic trip it creates only lasts 5 to 30 minutes when smoked, the effect is profound and remarkable, with the feeling that the user is transported to a completely different place, immersed in kaleidoscopic sounds and images. In its pure form, the drug is a white to yellow crystalline solid.