Avonex is a medicine used to treat:
- patients with relapsing multiple sclerosis (MS). MS is a disease in which inflammation damages the protective insulation around nerves (demyelination) as well as the nerves themselves. In relapsing MS, the patient has attacks (relapses) between periods with no symptoms. Avonex slows the progression of disability and reduces the number of relapses;
- patients who have had a single attack of demyelination, when this is severe enough to need treatment with injectable corticosteroids (anti‑inflammatory medicines). It is used when the patient is considered to be at high risk of developing MS. Before using Avonex, doctors need to exclude other causes for the symptoms.
Avonex contains the active substance interferon beta-1a.
Avonex : EPAR - Medicine overview (PDF/146.58 KB)
First published: 19/03/2009
Last updated: 19/12/2019
|Agency product number||
|International non-proprietary name (INN) or common name||
|Therapeutic area (MeSH)||
|Anatomical therapeutic chemical (ATC) code||
Biogen Netherlands B.V.
|Date of issue of marketing authorisation valid throughout the European Union||
Biogen Netherlands B.V.
10/08/2023 Avonex - EMEA/H/C/000102 - IA/0196/G
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Product information documents contain:
- summary of product characteristics (annex I);
- manufacturing authorisation holder responsible for batch release (annex IIA);
- conditions of the marketing authorisation (annex IIB);
- labelling (annex IIIA);
- package leaflet (annex IIIB).
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Avonex is indicated for the treatment of:
- patients diagnosed with relapsing multiple sclerosis (MS). In clinical trials, this was characterised by two or more acute exacerbations (relapses) in the previous three years without evidence of continuous progression between relapses; Avonex slows the progression of disability and decreases the frequency of relapses;
- 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 MS.
Avonex should be discontinued in patients who develop progressive MS.