Psychedelic - relating to or denoting drugs that produce hallucinations and apparent expansion of consciousness. Psychedelics were originally called ‘Psychotomimetics’ by the scientific community (mimicking the effect of a psychotic state). In 1956, Humphry Osmond coined the term Psychedelic (‘Mind Manifesting’ in Greek) in a letter to writer Aldous Huxley.
Entheogen - a psychoactive substance that induces alterations in perception, mood, consciousness, cognition, or behaviofor the purposes of engendering spiritual development in sacred contexts.
Psilocybin - a naturally occurring psychedelic prodrug compound produced by more than 200 species of mushrooms, collectively known as psilocybin mushrooms.
DMT (N,N-Dimethyltryptamine) - a chemical substance that occurs in many plants and animals and which is both a derivative and a structural analog of tryptamine. It can be consumed as a psychedelic drug and has historically been prepared by various cultures for ritual purposes as an entheogen. DMT has a rapid onset, intense effects, and a relatively short duration of action.
LSD (Lysergic acid diethylamide) - also known colloquially as acid, is a hallucinogenic drug.Effects typically include altered thoughts, feelings, and awareness of one's surroundings.