Psilocybin Psilocybin, the psychoactive compound present in "magic mushrooms," continues to be utilized for ceremonial and medicinal uses among the Indigenous peoples for millennia. Psilocybin has a hallucinogenic effect on the brain. Subscribe to The united states's greatest dictionary and have countless numbers much more definitions and Sophisticated research—advertisement free! https://checkbookmarks.com/story3149159/a-review-of-lsd-uses