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Related to nalorphine: naloxone
An early antagonist of most depressant and stimulatory effects of morphine and related narcotic analgesics; precipitates severe withdrawal symptoms in morphine addicts, and counteracts the respiratory depression produced by morphine and related compounds; when administered in the absence of narcotics, nalorphine has mildly analgesic and respiratory depressant effects in nonaddicts; superseded by naloxone hydrochoride.
nalorphine/nal·or·phine/ (nal´or-fēn) a semisynthetic congener of morphine; the hydrochloride salt is used as an antagonist to morphine and related narcotics and in the diagnosis of narcotic addiction.
nalorphineA morphine derivative which reversses the activity of morphine and other narcotics. See Opioids.
nalorphineA narcotic antagonist drug so similar in structure to MORPHINE that it occupies morphine receptor sites on cell membranes and prevents morphine from acting. A small dose of the drug, given to a morphine addict, can induce withdrawal symptoms within a matter of minutes.
a semisynthetic congener of morphine used as the hydrochloride to antagonize morphine and related narcotics and as an analgesic.