opioid antagonist

[oh-pee-oid-an-tag-uh-nist]

noun

1. Pharmacology.,  any drug that counteracts the effects of an opioid, used primarily to treat opioid overdose and as a therapy for opioid or alcohol addiction.

Example Sentences

Naloxone is a very powerful opioid antagonist.

From Slate

Opiant, original owner of opioid overdose remedy Narcan, is working on getting approval for a nasal spray version of nalmefene, believed to be a more effective opioid antagonist.

From Reuters

Staff would also be trained and authorized to administer an opioid antagonist.

From Los Angeles Times

The drug is considered an opioid antagonist and is now also prescribed to treat alcohol dependence.

From Seattle Times

Hope arrives in the form of a shot, an “opioid antagonist” that blocks the high of opioids, offering users an “immunity” of sorts.

From Los Angeles Times