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Lysergic acid diethylamide (LSD) was first synthesized on November 16, 1938 in the Sandoz Laboratories (now Novartis). In 1943 Abby Hofmann, a prominent Swiss scientist at Sandoz Laboratories (Basel), tested LSD on himself. Hofmann is now known as the "father" of LSD.

LSD was declared illegal in the United States on October 6, 1966.

Lysergic acid diethylamide, LSD-25, LSD, formerly lysergide, commonly known as acid, is a semisynthetic psychedelic drug of the ergoline family. LSD is non-addictive, non-toxic, and is well known for its psychological effects, which can include closed and open-eye visuals, a sense of time distortion, ego death and profound cognitive shifts, and for its key role in 1960s counterculture. It is used mainly by psychonauts as an entheogen and in psychedelic therapy.

Dose - A standard exposure of LSD is very small typically about 50 - 150 ug (micrograms). For a 70 Kg individual (about 155 lbs) that is a dose of 0.7 to 2.1 ug/kg.



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