What is Psilocybin? Psilocybin is a hallucinogenic chemical in certain mushrooms that grow in Europe, South America, Mexico, and the United States. Mushrooms that contain psilocybin are known as magic mushrooms.  It’s used in spiritual rituals, recreationally, and as medicine. Psilocybin has hallucinogenic effects. It can be obtained from both fresh and dried mushrooms in […]