Erowid LSD (Acid) Vault
www.erowid.org
Information about LSD including basics, effects, dosage, history, legal status, photos, research, media coverage, and links to other resources.

LSD is the best known and most researched psychedelic. It is the standard against which all other psychedelics are compared. It is active at extremely low doses and is most commonly available on blotter or in liquid form.