interferon beta-1b

This medicine is authorised for use in the European Union.


Extavia is a medicine used to treat adults who have multiple sclerosis (MS). MS is a disease in which inflammation damages the protective insulation around nerves (demyelination) as well as the nerves themselves. Extavia is used in patients:

  • who have experienced the signs of MS for the first time, and these are severe enough to justify treatment with injected corticosteroids (anti‑inflammatory medicines). It is used when the patient is considered to be at high risk of developing MS. Before using Extavia, doctors need to exclude other causes for the symptoms;
  • who have MS of the type known as ‘relapsing-remitting’, when the patient has attacks (relapses) between periods with no symptoms (remissions), and with at least two relapses within the last two years;
  • who have secondary progressive MS (the type of MS that comes after relapsing-remitting MS), when their disease is active.

Extavia contains the active substance interferon beta-1b. This medicine is the same as Betaferon, which is already authorised in the EU. The company that makes Betaferon has agreed that its scientific data can be used for Extavia.

This EPAR was last updated on 09/12/2020

Authorisation details

Product details
Agency product number
Active substance
interferon beta-1b
International non-proprietary name (INN) or common name
interferon beta-1b
Therapeutic area (MeSH)
Multiple Sclerosis
Anatomical therapeutic chemical (ATC) code
Publication details
Marketing-authorisation holder
Novartis Europharm Limited
Date of issue of marketing authorisation valid throughout the European Union
Contact address

Vista Building
Elm Park
Merrion Road
Dublin 4

Product information

29/10/2020 Extavia - EMEA/H/C/000933 - II/0103


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Pharmacotherapeutic group


Therapeutic indication

Extavia is indicated for the treatment of:

  • patients with a single demyelinating event with an active inflammatory process, if it is severe enough to warrant treatment with intravenous corticosteroids, if alternative diagnoses have been excluded, and if they are determined to be at high risk of developing clinically definite multiple sclerosis;
  • patients with relapsing-remitting multiple sclerosis and two or more relapses within the last two years;
  • patients with secondary progressive multiple sclerosis with active disease, evidenced by relapses.

Assessment history

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