Are an addictive drug, such as opium, that reduces pain, alters mood and behavior, and usually induces sleep or stupor. Natural and synthetic narcotics are used in medicine to control pain, suppress cough, and control diarrhea. Some narcotics, such as heroin, have no medical use, and any possession or use is illegal. This family of drugs may be broken into three classifications: Narcotics are naturally occurring compounds, such as opium, morphine, and codeine; semisynthetic compounds, such as heroin and hydromorphone (derived by modifying the chemical produced in opium); synthetic compounds made entirely in the laboratory, such as Demerol, methadone and Darvon. Methadone and Subutex are one controversial treatment method of helping people get off heroin.