Naltrexone definition

năl-trĕksōn
A drug that is an endorphin and narcotic antagonist, C20 H23 NO4 , used also in its hydrochloride form to treat alcohol and drug addiction. It is devoid of pharmacologic action when administered in the absence of narcotics.
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A white, crystalline, nonaddictive synthetic drug, C20H23NO4HCl, that blocks or reverses the effects of alcohol or a narcotic.
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A synthetic opioid antagonist, C20 H23 NO4 , used in its hydrochloride form to treat addiction to alcohol and to opioid drugs such as heroin.
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Origin of naltrexone

  • Blend of naloxone tre- (probably alteration of tri– from the three carbon atoms of the propyl group that distinguishes it from naloxone, of which it is a congener)

    From American Heritage Dictionary of the English Language, 5th Edition