title: The use of over-the-counter preparations by drug users attending an addiction treatment unit.
authors.forename: D J
authors.initials: DJ
authors.lastname: Armstrong
mesh_terms: D003430:Cross-Sectional Studies; D004739:England / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D004366:Nonprescription Drugs; D011619:Psychotropic Drugs; D016320:Substance Abuse Treatment Centers; D015819:Substance Abuse, Intravenous / Q000453:epidemiology / Q000534:rehabilitation; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000534:rehabilitation*
chemical_list: D004366:Nonprescription Drugs; D011619:Psychotropic Drugs