Psilocybin Psilocybin, the psychoactive compound found in "magic mushrooms," is used for ceremonial and medicinal uses among Indigenous peoples for millennia. Psilocybin provides a hallucinogenic impact on the brain. In its purest variety, LSD seems like a white or colorless crystalline powder, has no scent, and may well style bitter. https://medium.com/@LsdWorld/introduction-to-lsd-what-you-need-to-know-e70ffecb3a92