What is Tysabri?

Natalizumab is a humanized monoclonal antibody against the cell adhesion molecule α4-integrin. Natalizumab is used in the treatment of multiple sclerosis and Crohn's disease. It is co-marketed by Biogen Idec and Élan as Tysabri.

Questions and answers on "Tysabri"

I have had MS since 2000. I am now 42 and have just finished a week of iv steroid. My MS seems to be transitioning from RRMS to SPMS. Symptoms don...

doctor1 MD


Thank you for posting your query.

MS generally does not improve or stop progressing due to surgeries. So, any improvement is likely to be...

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hi I am an MS Patient, and have been using tysabri for 3 years. 2 weeks ago I catched genital herpes
will I be able to take my tysabri infusion...

doctor1 MD

Brief Answer:
You can take infusion

Detailed Answer:

I have gone through your question and understand your concerns.

Tysabri is associated...

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