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

ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Analgesic, antipyretic and anti-inflammatory agent

Non-steroidal anti-inflammatory drug, NSAID

Chemical Name

[(2,3-Dimetyl-5-oxo-1-phenyl-3-pyrazolin-4-yl)-metylamino]metanesulfonic acid

Foreign Names

Generic Names

  • Noramidopyrine (OS: DCF)
  • Methylmelubrin (IS)
  • Noramidopyrinium-methansulfonsäure (IS)
  • Metamizol hemimagnesium (IS)
  • Dipyrone (OS: USAN)
  • Metamizole Sodium (OS: Prop.INN)
  • Sulpyrine Hydrate (OS: JAN)
  • DPS (IS)
  • Methampyrone (IS)
  • Methylmelubrin (IS)
  • Natrium dimethylaminophenazonsulfonicum (IS)
  • NSC 73205 (IS)
  • Sodium methylaminoantipyrine methanesulfonate (IS)
  • UNII-6429L0L52Y (IS)
  • Dipyrone (PH: BP 2015)
  • Métamizol sodique (PH: Ph. Eur. 8)
  • Metamizol Sodium (PH: Ph. Eur. 8)
  • Metamizole sodium (PH: Ph. Eur. 8)
  • Metamizol-Natrium (PH: Ph. Eur. 8)
  • Metamizolum natricum (PH: Ph. Eur. 8)
  • Sulpyrine Hydrate (PH: JP XVI)

Brand Names

International Drug Name Search


DCFDénomination Commune Française
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Prop.INNProposed International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

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.