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

In the US, Methadone (methadone systemic) is a member of the drug class narcotic analgesics and is used to treat Chronic Pain, Opiate Withdrawal and Pain.

US matches:

UK matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Opioid analgesic

Chemical Name

3-Heptanone, 6-(dimetylamino)-4,4-diphenyl-

Foreign Names

  • Methadonum (Latin)
  • Methadon (German)
  • Méthadone (French)
  • Metadona (Spanish)

Generic Names

  • Metadone (OS: DCIT)
  • Methadone (OS: BAN)
  • Méthadone (OS: DCF)
  • A 4624 (IS)
  • AN 148 (IS)
  • Hoechst 10820 (IS: Hoechst)
  • Methadone Hydrochloride (OS: BANM, JAN)
  • Algolysine (IS)
  • Amidon (IS)
  • Doloheptan (IS)
  • H.E.S. (IS)
  • Mecodin (IS)
  • Moheptan (IS)
  • Panalgen (IS)
  • Phenadone (IS)
  • Phenadonum (IS)
  • Polamidon (IS)
  • Polamivet (IS)
  • Méthadone (chlorhydrate de) (PH: Ph. Eur. 8)
  • Methadone Hydrochloride (PH: BP 2015, USP 37)
  • Methadone hydrochloride (PH: Ph. Eur. 8)
  • Methadonhydrochlorid (PH: Ph. Eur. 8)
  • Methadoni hydrochloridum (PH: Ph. Eur. 8, Ph. Int. 2)

Brand Names

International Drug Name Search


BANBritish Approved Name
BANMBritish Approved Name (Modified)
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Prop.INNProposed International Nonproprietary Name (World Health Organization)

Click for further information on drug naming conventions and 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.