Lysergic acid diethylamide (LSD) is a classical hallucinogen originally synthesized by Albert Hoffman. He accidentally concocted the drug while making experimental substances from ergots to create circulatory and respiratory stimulants. The most pronounced effect on the animals allowed him to create a model for psychosis and study the induced temporary psychotic-like states. During the psychotic state, he also noted permitted recall and produced improved insight.
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