A type of psychoactive drugA name for a wide variety of chemical substances capable of altering the function of your mind and body in significant ways. These can include over the counter prescriptions, alcohol, and controlled substances. Most drugs are either physically and/or psychologically habit-forming. used mostly in minor tranquilizers. Drugs containing them such as Chlordiazepoxide are often used to assist in alcoholAn organic compound used in many products, most notably intoxicating drinks. Alcohol addiction is known as alcoholism. The first 12-step program was devised to deal with that malady. detoxification.