Melmac mushrooms produce psilocybin much like any other Psilocybe cubensis. Psilocybin is the primary psychoactive compound in magic mushrooms. When ingested, psilocybin is metabolized into the compound psilocin by the human body. The result is a psychedelic trip: a mind-altering experience that changes your perception of space, time, and sense of self. Feelings of nausea, anxiety, discomfort, and distress can accompany a psychedelic experience—factors that are made worse in uncomfortable environments.