nalbuphine
/ˈnalbjʊfiːn/Pharmacology
noun
A synthetic opioid antagonist which is very similar to morphine in chemical structure and is given by injection (usually in the form of its hydrochloride) as an analgesic; (−)-(5R,6S,14S)-9a-cyclobutylmethyl-4,5-epoxymorphinan-3,6,14-triol, C21H27NO4.
Origin
1960s; earliest use found in WHO Chronicle. Alteration of nalorphine, with substitution of -bu- for -or-.
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