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Hallucinogenic, huh LOO suh nuh JEHN ihk, drug is any of several substances that distort perception of oneself and one's surroundings. These drugs temporarily change the chemistry of the brain. Also called psychedelic (mind-revealing) drugs, hallucinogenic drugs affect the senses, emotions, and reasoning and the brain's control of muscles and certain body functions. The changes may be extremely pleasant or highly unpleasant and frightening. In the United States, laws prohibit the manufacture,… More »
Drug abuse is the nonmedical use of a drug that interferes with a healthy and productive life.... More >>
Drug testing is the analysis of body fluids to determine whether a person is using illegal drugs.... More >>
Pharmacology, fahr muh KOL uh jee, is the scientific study of the effects chemicals have on... More >>
Pharmacopeia, fahr muh kuh PEE uh, also spelled pharmacopoeia, is a book containing standards for... More >>
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