Magic mushroom: Learn about psilocybin

Learn about psilocybin, a chemical in certain types of mushrooms that can cause hallucinogenic effects and may have medical uses. Find out how psilocybin works in the brain, what are the risks and benefits, and how NIDA supports research on this topic. Bryan Johnson, the US-based anti-ageing influencer, took a five-gram dosage of magic mushrooms to understand the psychedelic's longevity effects. Psilocybin can impact your mental health and cause unwanted side effects such as paranoia. Learn about the risks of magic mushrooms, according to experts. Psilocybin mushrooms, or psilocybin-containing mushrooms, commonly known as magic mushrooms or as shrooms, [1] are a type of hallucinogenic mushroom and a polyphyletic informal group of fungi that contain the prodrug psilocybin, which turns into the psychedelic psilocin upon ingestion. [2]