Temporal Patterns of Drug Use by Heroin Addicts

Abstract
Judgments were obtained from 26 human subjects being treated for heroin use concerning the time of day they most commonly used heroin, marihuana and alcohol. Heroin chipping, or occasional use, showed a peak time, 1800-2200 h, coinciding with the most common time for use of a variety of substances in several populations. The habitual use of heroin is most common upon awakening, apparently to ward off withdrawal symptoms. Apparently, the use of marihuana and alcohol does not deviate significantly from the recreational pattern of drug use demonstrated by other populations for other nonprescribed drugs.

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