Multiple Sclerosis Home > What You Need to Know About Tysabri

What If I Overdose on Tysabri?

It is not entirely clear what to expect from an overdose with Tysabri. Seek immediate medical attention if you or someone else may have overdosed on this medication.
(Click Tysabri Overdose for more information.)

What If I Miss a Dose?

If you miss an appointment to receive a dose of Tysabri, contact your healthcare provider right away to reschedule. It is important to try to keep all of your healthcare appointments while receiving this medication.

How Should This Medication Be Stored?

Tysabri should be refrigerated, but not frozen. The vials should be protected from light. This medication must be diluted prior to use. Once it is diluted, it should be kept refrigerated, and used within eight hours. If it has been refrigerated, it should be allowed to come to room temperature before being infused.
Any medicine left over after a dose must be discarded. It cannot be saved for another dose.
Make sure to keep this and all other medications out of the reach of children and pets.

Available Strengths

Tysabri comes in one strength: Tysabri 300 mg per 15 mL single-use vials.

Can I Buy Generic Tysabri?

This medication is not available in generic form (see Generic Tysabri).
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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