See also:

• Science: Social Sciences: Psychology: Psychology and Religion: Religious Experience: Psychoactive Drugs  (1)
• Society: Religion and Spirituality: Esoteric and Occult: Personalities: Leary, Timothy  (11)

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

• The Albert Hofman Foundation - Homepage of the inventor of LSD. Contains articles, information about projects, reviews, and a virtual museum tour.
• 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.
• 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).
• 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.
• 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 concerning psychedelics.
• Status of Ololiuhqui in Mexico - Describes picietl, peyotl, teonanactl, and ololuihqui, four divinatory plants. Article by R. Gordon Wasson.
• Trip Magazine - A mainstream publication for about psychedelics.
• Tryptamind - Resource on psychoactive, psychedelic and hallucinogenic plants and the pharmacological effects of their active chemical constituents.