Psilocybin Psilocybin, the psychoactive compound present in "magic mushrooms," has become used for ceremonial and medicinal applications among the Indigenous peoples for millennia. Psilocybin incorporates a hallucinogenic impact on the brain. Subscribe to The usa's largest dictionary and have 1000's more definitions and State-of-the-art lookup—advertisement totally free! Verywell Brai... https://www.tumblr.com/lsdvibes/757469329295048704/historyoflsd?source=share