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Peginterferon Beta-1a

In the US, Peginterferon Beta-1a (peginterferon beta-1a systemic) is a member of the drug class interferons and is used to treat Multiple Sclerosis.

US matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories


Treatment of multiple sclerosis, MS

Chemical Name

N².¹ -{(2RS)-2-methyl-3-[ω-methoxypoly(oxyethylene)]propyl}human interferon beta (fibroblast interferon, IFN-beta) glycosylated expressed in mammalian cells (WHO)

Foreign Names

  • Peginterferonum beta-1a (Latin)
  • Peginterferon beta-1a (German)
  • Peginterféron bêta-1a (French)
  • Peginterferón beta-1a (Spanish)

Generic Names

  • Peginterferon Beta-1a (OS: USAN)
  • UNII-I8309403R0 (IS)

Brand Names

  • Avonex
    Biogen Idec, Macedonia
  • Plegridy
    Biogen, Germany; Biogen, Denmark; Biogen, Ireland; Biogen idec, Finland; Biogen Switzerland, Switzerland; BiogenIdec, Sweden
  • Rebif NF
    Merck, Mexico


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.