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Category: Medical
Word Count: 608
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Drug

Drug, chemical used for treatment or prevention of disease. The study of the actions and disposition of drugs in the human body is called pharmacology. The use of drugs dates from prehistoric times; the first list of drugs with instructions for preparation, called a pharmacopeia, appeared in 1546 in Nuremberg, Germany. Drugs can be plant, mineral, animal, or synthetic in origin. Many early folk medicines were derived from plants, including aspirin, digitalis, ergot, opium, quinine, and reserpine
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