Psilocybin Psilocybin, the psychoactive compound found in "magic mushrooms," has been employed for ceremonial and medicinal functions amid Indigenous peoples for millennia. Psilocybin contains a hallucinogenic impact on the brain. In its purest variety, LSD looks like a white or colorless crystalline powder, has no smell, and could taste bitter. https://www.tumblr.com/lsdvibes/757469329295048704/historyoflsd?source=share