Article
Article
Marijuana
Article By:
Schep, Leo J. ToxInform Limited, Dunedin, New Zealand.
Last reviewed:June 2021
DOI:https://doi.org/10.1036/1097-8542.405400
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A psychoactive narcotic drug obtained from the dried leaves, stems, seeds, and flowering tops of the hemp plant, Cannabis sativa. Cannabis sativa (Fig. 1), commonly called cannabis, is the source of marijuana, which is one of the most widely used recreational drugs in the world. For thousands of years, humans have consumed marijuana (in edible, smokable, and vaporized forms) because of its psychoactive effects (the narcotic ingredients of marijuana have stimulating effects) and its purported medical efficacies. The term marijuana is derived from the Spanish name for the dried leaves, stems, seeds, and flowering tops of the cannabis plant. See also: Hemp; Narcotic; Psychotomimetic drug; Rosales
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