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			November 23, 2009

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You are here : AllRefer.com > Reference > Encyclopedia > Pharmacology > narcotic
By Alphabet : Encyclopedia A-Z > N

narcotic, Pharmacology

Related Category: Pharmacology

narcotic, any of a number of substances that have a depressant effect on the nervous system. The chief narcotic drugs are opium, its constituents morphine and codeine, and the morphine derivative heroin.

See also drug addiction and drug abuse.

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