Psilocybin Psilocybin, the psychoactive compound present in "magic mushrooms," has become used for ceremonial and medicinal applications amongst Indigenous peoples for millennia. Psilocybin has a hallucinogenic effect on the brain. LSD can be a intellect-altering drug. It is thought LSD causes its characteristic hallucinogenic consequences by means of interaction Together https://www.tumblr.com/lsdvibes/757469329295048704/historyoflsd?source=share