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Definition of Psychotropic drug

Psychotropic drug: Any drug capable of affecting the mind, emotions, and behavior. Some legal drugs such as lithium for depression are psychotropic. Many illicit drugs such as cocaine are also psychotropic. Also called a psychodynamic drug.

From the Greek psycho-, the mind + trop, a turning = (capable of) turning the mind.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=30807
Last Editorial Review: 2/17/2004

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