Information on entheogens, psychedelics, and hallucinogens including traditional, spiritual, and responsible use, chemistry, effects, experiences, images, research, legislation, media coverage, bibliographies and links.

A mainstream publication for about psychedelics.

Homepage of the inventor of LSD. Contains articles, information about projects, reviews, and a virtual museum tour.

Menu of articles, research papers, books, and essays on LSD, peyote, psilocybin, and the use of psychedelic drugs in research, therapy, religion and personal growth.

Information, treatment, and forums for sufferers of HPPD (Hallucinogen Persisting Perception Disorder), also known as flashbacks, which happens to some users of psychedelic drugs.

Information about psychedelics, entheogens, empathogens (MDMA, Ecstasy), from a pharmacologist and chemist.

Articles on psychedelic mushrooms and DMT (with field notes on DMT experiences); LSD and Ketamine trip reports; preservation of dried psilocybin mushrooms; links to other documents concerning psychedelics.

Information and message boards for people with Hallucinogen Persisting Perception Disorder (flashbacks).

Resource on psychoactive, psychedelic and hallucinogenic plants and the pharmacological effects of their active chemical constituents.

Information regarding the use of hallucinogenic substances for the treatment of cluster headaches and other vascular headaches.