Any of the psychoactive drugs that originate from the opium poppy or that have a chemical structure like the drugs derived from opium Such drugs include opium, codeine, and morphine (derived from the plant), and hydromorphone (Dilaudid), methadone, and meperidine (Demerol), which were first synthesized by chemists
drugs such as opium and heroin derived from opium poppy that dull senses and induce euphoria, well being relaxation-also includes synthetic derivatives
A major class of drugs that depress the central nervous system and are used principally to relieve pain Examples include morphine, heroin, and codeine
A range of drugs that are derived form the opium poppy and are strong central nervous system depressants and pain killers Drugs include opium, heroin, morphine and codeine
= compound containing the fundamental morphine or thebaine structure possessing some affinity to any, or all, of the opioid receptor subtypes Examples are heroin, buprenorphine and naltrexone
a class of codeine-derived, controlled narcotics, such as Tylenol #3, Percocet (oxycodone), Darvon (propoxyphene) and methadone; used to manage severe cases of Restless Legs Syndrome and Periodic Limb Movement Disorder
{i} narcotic drug containing opium; anything which soothes or causes sleepiness or dullness of the senses; pharmaceutical substance which has properties similar to opium and its derivatives
Any substance, natural or synthetic, that is related in action to morphine and binds to the same, or some of the same, receptors Some writers use it just to mean opium, morphine, codeine, and heroin - the natural ingredients of the poppy and their derivatives, excluding the synthetic narcotic analgesics