Psilocybin and Mescaline - Molecule of the Month October 1999 [Archived version]
Bristol Research January 1, 2017 Paul J. May
Psilocybin and mescaline are naturally occurring alkaloids that produce hallucinogenic effects. Psilocybin is found in certain mushrooms, while mescaline comes from peyote and other cacti. Both substances have been used for centuries in religious and spiritual ceremonies. Chemically, they resemble the neurotransmitter serotonin and can alter perception, mood, and cognition. The text describes their molecular structures, sources, and historical uses, noting that they are classified as controlled substances. It also explains how they interact with serotonin receptors in the brain to produce their effects.