Psilocybin Psilocybin, the psychoactive compound present in "magic mushrooms," has long been useful for ceremonial and medicinal needs among Indigenous peoples for millennia. Psilocybin includes a hallucinogenic effect on the brain. Subscribe to The us's biggest dictionary and get 1000's additional definitions and State-of-the-art research—advertisement absolutely free! Or if the https://www.tumblr.com/lsdvibes/757469329295048704/historyoflsd?source=share