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    Nalorphine Limited data
    Limited data
    Sparse data. Doses and effects may be unreliable or untested.
    • 2 corroborating sources
    • no dose data

    Summary DrugBank

    Nalorphine is a mixed opioid agonist–antagonist. It acts at two opioid receptors—at the mu receptor it has antagonistic effects, and at the kappa receptors it exerts high-efficacy agonistic characteristics. It is used to reverse opioid overdose and (starting in the 1950s) in a challenge test to determine opioid dependence.

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