This medicine is authorised for use in the European Union.


Tysabri is a medicine for treating adults with multiple sclerosis (MS) that is not sufficiently controlled with another disease-modifying therapy or is rapidly getting worse.

Multiple sclerosis is a disease of the nerves, in which inflammation destroys the protective sheath surrounding nerves and damages the nerves themselves.

Tysabri is used in relapsing-remitting MS, a type of MS in which the patient has attacks (relapses) between periods of stable symptoms (remissions).

It contains the active substance natalizumab.

This EPAR was last updated on 13/09/2022

Authorisation details

Product details
Agency product number
Active substance
International non-proprietary name (INN) or common name
Therapeutic area (MeSH)
Multiple Sclerosis
Anatomical therapeutic chemical (ATC) code
Publication details
Marketing-authorisation holder
Biogen Netherlands B.V.
Date of issue of marketing authorisation valid throughout the European Union
Contact address

Prins Mauritslaan 13
1171 LP Badhoevedorp
The Netherlands

Product information

30/05/2022 Tysabri - EMEA/H/C/000603 - PSUSA/00002127/202108

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Product information documents contain:

You can find product information documents for centrally authorised human medicines on this website. For centrally authorised veterinary medicines authorised or updated from February 2022, see the Veterinary Medicines Information website.

Pharmacotherapeutic group

Selective immunosuppressants

Therapeutic indication

Tysabri is indicated as single disease modifying therapy in adults with highly active relapsing remitting multiple sclerosis for the following patient groups:

  • Patients with highly active disease activity despite a full and adequate course of treatment with at least one disease modifying therapy (DMT) (for exceptions and information about washout periods see sections 4.4 and 5.1)

  • Patients with rapidly evolving severe relapsing remitting multiple sclerosis defined by 2 or more disabling relapses in one year, and with 1 or more Gadolinium enhancing lesions on brain MRI or a significant increase in T2 lesion load as compared to a previous recent MRI.

Assessment history

Changes since initial authorisation of medicine

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