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In the US, Nalmefene (nalmefene systemic) is a member of the drug class antidotes and is used to treat Opioid Overdose and Reversal of Opioid Sedation.

US matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Alcohol withdrawal agent

Opioid receptor antagonist

Chemical Name

17-(cyclopropylmetyl)-4,5α-epoxy-6-metylenemorphinan-3,14-diol (WHO)

Foreign Names

  • Nalmefenum (Latin)
  • Nalmefen (German)
  • Nalméfène (French)
  • Nalmefeno (Spanish)

Generic Names

  • Nalmefene (OS: BAN, USAN)
  • JF 1 (IS)
  • Nalmetrene (IS)
  • ORF 11676 (IS)
  • Nalmefene Hydrochloride (OS: BANM)
  • UNII-K7K69QC05X (IS)
  • UNII-52Z0G7QVJX (IS)

Brand Names

  • Selincro
    H. Lundbeck, Portugal; Lundbeck, Spain; Lundbeck, Greece; Lundbeck, Iceland; Lundbeck, Latvia; Lundbeck, Poland; Lundbeck, Romania; Lundbeck, Slovenia; Lundbeck, Slovakia; Lundbeck Italia, Italy
  • Lemeng
    Tiantaishan Pharmaceutical, China
  • Selincro
    Lundbeck, Belgium; Lundbeck, Denmark; Lundbeck, Croatia (Hrvatska)
  • Shuna
    Liaoning Haisike Pharmaceutical Co., Ltd., China
  • Selincro
    Lundbeck, Austria; Lundbeck, Australia; Lundbeck, Switzerland; Lundbeck, Germany; Lundbeck, Finland; Lundbeck, France; Lundbeck, United Kingdom; Lundbeck, Hungary; Lundbeck, Ireland; Lundbeck, Israel; Lundbeck, Norway; Lundbeck, Sweden


BANBritish Approved Name
BANMBritish Approved Name (Modified)
ISInofficial Synonym
OSOfficial Synonym
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name
WHOWorld Health Organization

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.