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Who Uses Illicit Drugs?
Who Uses Illicit Drugs?

... Using, Misusing, and Abusing Drugs • Drug misuse – the use of a drug for a purpose for which it is not intended • Drug abuse – excessive use of drugs • Addiction – the habitual reliance on a substance or behavior to produce a desired mood ...
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Becoming Neurochemical Selves

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6Control Drug Delivery System

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Pharmacognosy



Pharmacognosy is the study of medicinal drugs derived from plants or other natural sources. The American Society of Pharmacognosy defines pharmacognosy as ""the study of the physical, chemical, biochemical and biological properties of drugs, drug substances or potential drugs or drug substances of natural origin as well as the search for new drugs from natural sources.""It is also defined as the study of crude drugs.
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