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drug use, use of drugs for psychotropic rather than medical purposes. Among the most common psychotropic drugs are opiates (opium, morphine, and heroin), hallucinogens (LSD, mescaline, and psilocybin), barbiturates, cocaine, amphetamines, tranquilizers, and cannabis. Alcohol and tobacco are also sometimes classified as drugs. The term drug abuse is normally applied to excessive and addictive use of drugs. Because such drugs can have severe physiological and psychological, as well as social, effects, many governments regulate their use. To consider drugs only as medicinal agents or to insist that drugs be confined to prescribed medical practice is to fail to understand human ...(100 of 15403 words)

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