Deno, Richard A. University of Michigan, Ann Arbor, Michigan.
Last reviewed:January 2021
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A branch of pharmacology dealing with medicinal drugs obtained from natural sources. Pharmacognosy is concerned with the general biology, biochemistry, and economics of nonfood natural products of value in medicine, pharmacy, and other health professions. The products studied are of biologic origin, either plant (see illustration) or animal. They may consist of entire organs, mixtures obtained by exudation or extraction, or chemicals obtained by extraction and subsequent purification. See also: Biochemistry; Medicine; Pharmaceutical chemistry; Pharmacology
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