Active substance
Interferon beta-1a
2 products from 2 companies contain this in European Union.
2 prescription only
Prescription only
AvonexEU authorisation Biogen Netherlands B.V. · Interferon beta-1a · L03AB07RebifEU authorisation Merck Europe B.V. · Interferon beta-1a · L03AB07
Same substance is not the same product. Strength, form, release mechanism and other ingredients all differ. Whether one can replace another is a decision for a pharmacist.