Psilocybin Psilocybin, the psychoactive compound present in "magic mushrooms," has been used for ceremonial and medicinal uses among Indigenous peoples for millennia. Psilocybin has a hallucinogenic impact on the brain. When tolerance occurs, you need much more of your drug to achieve exactly the same outcome. This increases the likelihood https://medium.com/@LsdWorld/introduction-to-lsd-what-you-need-to-know-e70ffecb3a92