Ask Dr. Shulgin
Information about psychedelics, entheogens, empathogens (MDMA, Ecstasy), from a pharmacologist and chemist.
Cluster Busters
Information regarding the use of hallucinogenic substances for the treatment of cluster headaches and other vascular headaches.
Erowid Psychoactive Vaults
Information on entheogens, psychedelics, and hallucinogens including traditional, spiritual, and responsible use, chemistry, effects, experiences, images, research, legislation, me…
HPPD: Hallucinogen Persisting Perception Disorder
Information, treatment, and forums for sufferers of HPPD (Hallucinogen Persisting Perception Disorder), also known as flashbacks, which happens to some users of psychedelic drugs.
HPPDonline.com
Information and message boards for people with Hallucinogen Persisting Perception Disorder (flashbacks).
Serendipity: Psychedelics
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…
The Psychedelic Library
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.
Tryptamind
Resource on psychoactive, psychedelic and hallucinogenic plants and the pharmacological effects of their active chemical constituents.