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In some countries, this medicine may only be approved for veterinary use.

In the US, Naltrexone (naltrexone systemic) is a member of the following drug classes: antidotes, drugs used in alcohol dependence and is used to treat Alcohol Dependence, Fibromyalgia, Opiate Dependence, Smoking Cessation and Trichotillomania.

US matches:

UK matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories


Opioid receptor antagonist

Chemical Name

Morphinan-6-one, 17-(cyclopropylmetyl)-4,5-epoxy-3,14-dihydroxy-, (5α)-

Foreign Names

  • Naltrexonum (Latin)
  • Naltrexon (German)
  • Naltrexone (French)
  • Naltrexona (Spanish)

Generic Names

  • Naltrexone (OS: DCF, DCIT, USAN, BAN)
  • UM 792 (IS)
  • Naltrexone Hydrochloride (OS: BANM)
  • EN-1639 A (IS: DuPont Merck)
  • Naltrexone Hydrochloride (PH: BP 2016, USP 38)
  • Naltrexone hydrochloride (PH: Ph. Eur. 8)
  • Naltrexoni hydrochloridum (PH: Ph. Eur. 8)

Brand Names


BANBritish Approved Name
BANMBritish Approved Name (Modified)
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
ISInofficial Synonym
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.