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Naltrexone (International)

Note: 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 Use Disorder, Fibromyalgia, Opioid Use Disorder, Smoking Cessation and Trichotillomania.

US 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 (DuPont Merck) (IS)
  • Naltrexone Hydrochloride (PH: BP 2018, USP 41)
  • Naltrexone hydrochloride (PH: Ph. Eur. 9)
  • Naltrexoni hydrochloridum (PH: Ph. Eur. 9)

Brand Names

  • Abernil
    Medochemie, Cyprus
  • Adepend
    Norameda, Lithuania; Orpha-Devel, Slovenia; Providens, Croatia (Hrvatska); UAB “STADA-Nizhpharm-Baltija”, Estonia
  • Mysimba [+ Bupropion]
    Orexigen, Lithuania; Orexigen, Latvia; Orexigen Therapeutics Ireland, Slovenia
  • Mysimba 8 mg/90 mg retard [+ Bupropion]
    Orexigen, Hungary
  • Nalerona
    ABL Pharma, Peru; Laboratorios Andromaco, Chile
  • Naltrexone
    Haupt Pharma Wolfratshausen, Serbia
  • Naltrexone Accord
    Accord Healthcare, France; Accord, Lithuania
  • Naltrexone Accord Healthcare
    Accord Healthcare, Italy
  • Naltrexone AOP
    AOP Orphan, Lithuania
  • Naltrexone AOP 50 mg
    AOP, Hungary
  • Naltrexone Hydrochloride
    Accord Healthcare, Cyprus
  • Naltrexone Mylan
    Mylan, Cyprus
  • Naprosyne EC-500
    CSL Behring, Luxembourg
  • Uninaltrex
    União Química, Brazil
  • Vivitrol
    Alkermes, Russian Federation; Alkermes, United States
  • Abernil
    Medochemie, Malta; Medochemie Vietnam, Vietnam
  • Addtrex
    Rusan Pharma Ltd., Georgia
  • Adepend
    AOP Orphan, Bulgaria; Orpha Devel, Czech Republic; Orpha-Devel, Denmark; Orpha-Devel, Poland
  • Adepend 50mg
    AOP Orphan Pharmaceuticals, United Kingdom; Desitin, Germany; Orpha, Hungary
  • Anarcol
    October Pharma, Egypt
  • Antaxone
    Zambon, Georgia; Zambon, Italy
  • Apo-Naltrexone
    Apotex, Australia; Apotex, Canada
  • Contrave [+ Bupropion]
    Orexigen, United States
  • Dependex 50 mg
    Amomed Pharma, Austria
  • Destoxican
    Pentafarma, Portugal
  • Embeda [+ Morphine]
    Alpharma, United States
  • Ethylex
    Dem Ilac, Turkey
  • Ethylex 50 mg
    Orpha-Devel, Austria
  • Mysimba [+ Bupropion]
    CentralPharma, Estonia; Consilient, Ireland; Consilient Health, United Kingdom; Navamedic, Denmark; Navamedic, Finland; Navamedic, Sweden; Orexigen, Czech Republic; Orexigen, Norway; Orexigen Therapeutics, Romania; Orexigen Therapeutics Ireland Ltd, Greece; Orexigen Therapeutics Ireland, Portugal; Rovi, Spain; Valeant, Slovakia
  • Nalcotrex
    Ariston, Argentina
  • Nalerona
    Silesia, Paraguay
  • Nalorex
    Bristol-Myers Squibb, Ireland; Bristol-Myers Squibb Pharmaceutical, United Kingdom; Central Procurement & Supplies Unit, Malta; L. Molteni & C. dei F.lli Alitti Società di Esercizio, Italy
  • Nalorex 50mg
    Bristol-Myers Squibb, Luxembourg
  • Naltraccord
    Teva, New Zealand
  • Naltrax
    Navana, Bangladesh
  • Naltrexin
    Yungjin, South Korea
  • Naltrexin 50mg
    OrPha Swiss, Switzerland
  • Naltrexon Abcur
    Molteni Farmaceutici, Sweden
  • Naltrexon Accord
    Accord Healthcare, Denmark
  • Naltrexon AOP
    AOP Orphan Pharmaceuticals, Denmark
  • Naltrexon HCl aop
    Desitin, Germany; Orphan Europe, Netherlands
  • Naltrexon HCl Sandoz
    Sandoz, Netherlands
  • Naltrexon Hydrochloride Accord
    Accord Healthcare, Netherlands
  • Naltrexon Vitaflo
    AOP Orphan Pharmaceuticals, Finland; AOP Orphan Pharmaceuticals, Sweden
  • Naltrexona Accord
    Accord, Spain; Accord, Portugal
  • Naltrexona Destoxican
    Pentafarma, Portugal
  • Naltrexona Torrex
    Chiesi Pharmaceuticals, Romania
  • Naltrexone Accord
    Accord Healthcare, Belgium; Accord Healthcare, Bulgaria; Accord Healthcare, Estonia; Accord Healthcare, Latvia; Accord Healthcare, Sweden
  • Naltrexone AOP
    AOP, Latvia; Providens, Croatia (Hrvatska)
  • Naltrexone GH
    Generic Health, Australia
  • Naltrexone HCL L.Molteni
    L. Molteni, Hong Kong
  • Naltrexone Hydrochloride
    Accord Healthcare, United Kingdom; Accord Healthcare, Malta; Accord Healthcare, United States; Apotex, United States; Barr, United States; Elite, United States; Mallinckrodt, United States; Sun Pharma, United States
  • Naltrexone Hydrochloride Accord
    Accord Healthcare, Poland
  • Naltrexone Hydrochloride Sterinova
    Sterinova, Canada
  • Naltrexone Mylan
    Mylan, France
  • Naltrexone POA Pharma
    POA, Norway; POA Pharma, Denmark; POA Pharma, Sweden
  • Naltrexon-HCI neuraxpharm
    neuraxpharm Arzneimittel, Germany
  • Naltrexonhydrochlorid Accord
    Accord Healthcare, Germany
  • Naltrexonhydrochloride PCH
    Pharmachemie, Netherlands
  • Narcoral
    Sirton, China; Sirton Medicare, Italy
  • Nemexin
    Bristol-Myers Squibb, Germany
  • Nuo Xin Sheng
    Sihuan Pharmaceutical Factory, China
  • Nutrexon
    Nufarindo, Indonesia
  • Phaltrexia
    Pharos, Indonesia
  • Prodetoxon
    ZAO, Georgia
  • Regental
    Teva, Uruguay
  • Revez
    S.Chobet, Argentina
  • Revia
    Bristol-Myers Squibb, France; Bristol-Myers Squibb, New Zealand; Cristália, Brazil; Du Pont, Kuwait; Gervasi, Spain; Jeil, South Korea; Tchero, Egypt; Torrex Chiesi, Lithuania
  • ReVia
    Bristol-Myers Squibb, Australia; Teva Canada, Canada
  • Revia 50 mg
    Chiesi Pharmaceuticals, Austria; Eurim-Pharm, Austria
  • Trexonil [veterinary use]
    Wildlife Laboratories, United States; Wildlife Pharma, South Africa


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.