This list does not necessarily include all brand names.
Narcotic analgesics act on the central nervous system to relieve pain.
When narcotics are used over a long period of time, the body becomes used to the narcotic and begins to require more of the drug to achieve the same relief. They cause both physical and mental dependence. As a result of physical dependence, they may cause withdrawal symptoms when the medication is stopped abruptly. Some narcotics also help control coughing and diarrhea . Narcotic analgesics are used to help relieve pain, stop coughing , and stop diarrhea .