naloxone

From nal- (“opioid receptor antagonist/agonist”) +‎ (hydr)ox(y) +‎ -one.

• (Received Pronunciation) IPA^(key): /nəˈlɒk.səʊn/
• (General American) IPA^(key): /nəˈlɑkˌsoʊn/
• Hyphenation: na‧lox‧one

naloxone (uncountable)

1. (pharmacology) An opioid inverse agonist used to counter the effects of an overdose on opioids (such as heroin or morphine).
   • 2024 August 9, Meg Tirrell, “First nasal spray epinephrine drug for emergency allergic reactions gets FDA approval”, in CNN‎^[1]:

     Neffy uses the same spray device as Narcan, the naloxone nasal spray for opioid overdose, according to a spokesperson for its maker, ARS Pharmaceuticals.

• “naloxone”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “naloxone”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.