Definition of "naltrexone" []

• A drug, C20H23NO4, used as an antagonist to narcotic drugs. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Contrave is a combination of naltrexone, which is used to treat alcohol and drug addiction, and buproprion, which is sold as Wellbutrin when used as an antidepressant and Zyban when used to help people quit smoking."
• "The archetype, a compound called naltrexone, reverses the pleasurable effect of narcotics like heroin."
• "With rapid detox, patients are given anesthesia and then given an opiate - blocking drug called naltrexone that causes nearly immediate withdrawal."