Depressants -- Alcoholism: an introduction -- Alcoholism: acute treatment -- Stimulants: amphetamines and cocaine -- Opioids and other analgesics -- Cannabinols -- Hallucinogens and related drugs -- Glues, inhalants and aerosols -- Over-the-counter (OTC) drugs and some prescription drugs -- Xanthines (caffeine) and nicotine -- Multidrug abuse and dependence -- Emergency problems: a quick overview -- Rehabilitation.