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Wiktionary
nalorphine

n. A drug used to reverse opioid overdose.

WordNet
nalorphine

n. a narcotic antagonist (trade name Nalline) that counteracts the effects of narcotics (especially the effects of poisoning by morphine) [syn: Nalline]

Wikipedia
Nalorphine

Nalorphine ( INN) (brand names Lethidrone, Nalline), also known as N-allyl-normorphine, is a mixed opioid agonist–antagonist with opioid antagonist and analgesic properties. It was introduced in 1954 and was used as an antidote to reverse opioid overdose and in a challenge test to determine opioid dependence. It acts at two opioid receptors — the μ-opioid receptor (MOR) where it has antagonistic effects, and at the κ-opioid receptor (KOR) (K = 1.6 nM; EC = 483 nM; E = 95%) where it exerts high- efficacy partial agonist/near- full agonist characteristics. Nalorphine was the second opioid antagonist to be introduced, preceded by nalodeine (N-allylnorcodeine) in 1915 and followed by naloxone in 1960 and naltrexone in 1963. Due to potent activation of the KOR, nalorphine produces side effects such as dysphoria, anxiety, confusion, and hallucinations, and for this reason, is no longer used medically.

Usage examples of "nalorphine".

Ram6n had two io-milligram phials of Nalorphine on hand as an antidote.

Ramsey had two io-milligram phials of Nalorphine on hand as an antidote.

Even the narcotic anatagonists such as nalorphine, pentazocine and cyclazocine, which have analgesic activity also have addiction liability.

There were better tests now, such as nalorphine, but for a dead person, the mouse test remained as good as any.

Before she could answer, Hammond returned with the nalorphine and syringe.

I would have felt pity if I had not known that she was causing the reaction herself, that I had not injected any nalorphine at all.