Skip to main content
Intermediate Technical In the Industry Vocabulary Test

naloxone

Pronunciation: nal-OX-one

Opioid antagonist medication used to reverse potentially fatal opioid overdoses.

Full Definition

Naloxone is a fast-acting opioid receptor antagonist that rapidly displaces opioids from brain receptors, effectively reversing respiratory depression and other life-threatening effects of opioid overdose. Available as nasal sprays (Narcan) or auto-injectors (Evzio), naloxone can be administered by trained individuals including family members, first responders, and community members. Its effects are temporary, typically lasting 30-90 minutes, so emergency medical care is still necessary after administration. Naloxone has become a cornerstone of harm reduction strategies.

Usage

Usage note: Brand name Narcan is often used interchangeably but should be capitalized when referring to the specific product.

In Context

  • "All staff members received training on proper naloxone administration techniques." — Staff training manual
  • "The patient's family was provided with naloxone kits and emergency response instructions." — Discharge planning note

Also known as

Narcan opioid reversal agent

Contrasted with

opioid agonist morphine

Don't confuse with

naltrexone nalmefene

Editors from these organizations have used our services since 1998

Reuters BBC Oxford University Press Penguin Random House Springer Microsoft Suncor Energy United Nations Fisher Investments IBM The Home Depot KODAK CHEVRON