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Mefenidramium Metilsulfate



CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Histamine H₁-receptor antagonist (H₁-antihistaminic)

Chemical Name

[2-(Diphenylmetoxy)etyl]trimetylammonium metyl sulfate

Foreign Names

  • Mefenidramii metilsulfas (Latin)
  • Mefenidramium metilsulfat (German)
  • Métilsulfate de méfénidramium (French)
  • Metilsulfato de mefenidramio (Spanish)

Generic Names

  • Diphenhydramine methylsulfomethylate (IS)
  • Méfénidramium méthylsulfate (IS)

Brand Name

  • Onctose (Mefenidramium Metilsulfate and Lidocaine)
    Merck Médication Familiale, France


ISInofficial Synonym
Rec.INNRecommended International Nonproprietary Name (World 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

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