Psychedelic drug The phrase "psychedelic" refers to a category of psychoactive substances that deliver profound alteration of notion, thought, emotional state, and conduct. These include vintage psychedelics which include LSD, mescaline, psilocybin, DMT, ayahuasca, and peyote; dissociatives like ketamine, nitrous oxide, alcohol, and barbiturates; and stimulants like MDMA and methamphe... https://philipi385hvo3.wikilowdown.com/user