naloxone
noun
Note: Naloxone is administered by injection or as a nasal spray to reverse the effects of opioids especially in the emergency treatment of opioid overdose. It is also administered in combination with buprenorphine in the form of a dissolvable tablet placed under the tongue or a film placed inside the cheek to treat opioid dependence.
Examples of naloxone in a Sentence
Jt Moodee Lockman, CBS News, 30 Jan. 2026
The naloxone strengthened the man’s pulse and breathing, and his condition began to improve.
—Elissa Jorgensen, Dallas Morning News, 29 Jan. 2026
First responders treated Irsay with naloxone, a drug used to treat opioid overdoses, before transporting him to a local hospital, according to police reports.
—Zachary Folk, Forbes.com, 22 Jan. 2026
In Massachusetts, naloxone, known also by the name brand Narcan, is also available at pharmacies without a prescription.
—Colleen Cronin, Boston Herald, 21 Jan. 2026
See All Example Sentences for naloxone
Cite this Entry
“Naloxone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/naloxone. Accessed 4 Feb. 2026.
Copy CitationMedical Definition
naloxone
noun
ˈnal-ək-ˌsōn
Note: Naloxone is administered by injection or as a nasal spray to reverse the effects of opioids and especially in the emergency treatment of opioid overdose. It is also administered in combination with buprenorphine in the form of a dissolvable tablet placed under the tongue or a film placed inside the cheek to treat opioid dependence. Trademarks for preparations containing naloxone include Bunavail, Evzio, Narcan, Suboxone, and Zubsolv.
