The effects of psilocin and its congener psilocybin are a heightened awareness of sensory input, often accompanies by limited control over what is experienced.
These drugs are found in the mushroom Psilocybe mexicana, which is indigenous to Mexico and the USA. The mushroom is one of several hallucinogenic agents still used in religious and healing ceremonies practised by some American Indians.
Psilocybin may have usefulness in treating depression, post-traumatic stress disorder, obsessive compulsive disorder, eating disorders and anxiety