Buy LSD Online from psychedelicsshops.com LSD, or lysergic acid diethylamide, is a powerful hallucinogenic drug that has been used for both recreational and therapeutic purposes. It was first synthesized by Swiss chemist Albert Hofmann in 1938 and later became popular in the counterculture movements of the 1960s. LSD works by affecting serotonin receptors in the brain, causing alterations in perception, mood, and thought processes. The effects of LSD can vary widely depending on the dose and individual factors such as mood and environment, but common experiences include vivid visual and auditory hallucinations, altered sense of time and space, and intense emotions.