Anatomic Therapeutic Chemical classification

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An international systematic standard for pharmaceutical drugs that groups them according to the organ or tissue on which they act, their mode of action, and their chemical composition. The ATC uses a unit of measurement, the defined daily dose (DDD). The World Health Organization endorses the use of ATC/DDD, but it emphasizes that this does not necessarily imply approval of any specific ATC drugs.

Subjects: Public Health and Epidemiology.

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