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Definition of naloxone
: a synthetic potent antagonist of narcotic drugs (such as morphine and fentanyl) that is administered especially in the form of its hydrochloride C19H21NO4·HCl ◆Naloxone is typically administered by injection 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.
From the M-W Editors
Recent Examples of naloxone from the Web
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Some drug users not yet ready for treatment could still get needles and perhaps a dose of the opioid overdose reversal drug naloxone.
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Massachusetts State Police began carrying naloxone for dogs in March, according to CBS News.
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Patients are prescribed buprenorphine/naloxone, also known as Suboxone.
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Akron Fire Department and EMS have carried naloxone among their advanced life support drugs for more than 20 years.
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The five new opioid treatment programs are in counties with the highest rates of use of naloxone, a drug that can reverse an overdose.
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Narcan is a brand name for naloxone, a drug that blocks the effects of opioids and reverses the effects of overdoses.
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Alabama Department of Public Health State Pharmacy Director Nancy Bishop said all Alabama pharmacies now have access to a standing order to dispense naloxone without a prescription.
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Another pulls out an overdose reversal drug — naloxone — and blasts it up her nose.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'naloxone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of naloxone
N-allyl + hydroxy- + -one
Medical Dictionary
Medical Definition of naloxone
: a potent synthetic antagonist of narcotic drugs (as morphine and fentanyl) that is administered especially in the form of its hydrochloride C19H21NO4·HCl ◆Naloxone is typically administered by injection 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.
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