Could a Biogen medication be right for you?

Your healthcare provider is your best source of information, especially when choosing treatment. Together, you decide what treatment may work best for you. Download these questions to help get the conversation started at your next appointment.



What is TYSABRI?

TYSABRI is a prescription medicine used to treat people with relapsing forms of multiple sclerosis (MS).

It is not known if TYSABRI is safe and effective in children under 18 years of age.

TYSABRI increases your risk of getting a rare brain infection—called progressive multifocal leukoencephalopathy (PML)—that usually leads to death or severe disability. When starting and continuing treatment with TYSABRI, it is important to discuss with your doctor whether the expected benefit of TYSABRI is enough to outweigh the risk. Because of the risk of PML, TYSABRI is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the TOUCH® Prescribing Program.

How do I take TYSABRI? IV infusion Once every 28 days

  • TYSABRI is a 1-hour intravenous infusion given by a healthcare professional once every 28 days
  • After the infusion, you’re asked to stay for another hour just to make sure you’re not having an infusion-related reaction
  • Before each TYSABRI dose you will be asked questions to make sure TYSABRI is still right for you
  • The infusions are administered at doctors’ offices or in TOUCH®-authorized infusion centers

How could TYSABRI help me?

See how TYSABRI was shown in clinical studies to impact:

  • Physical disability progression
  • MRI brain lesions
  • Relapses

Who should not receive TYSABRI?

Do not receive TYSABRI if you have PML or are allergic to natalizumab or any of the ingredients in TYSABRI.

Find out more about TYSABRI >

Clinical results

Learn more about how TYSABRI has been shown to treat relapsing MS.

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Doctor Discussion Guide

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Understanding Important Safety Information

Before taking any treatment, it’s important to understand as much about it as possible. The Important Safety Information for a treatment describes possible side effects you may experience. It also tells you what information you need to share with your doctor before starting treatment.

On this website, the Important Safety Information appears on each specific treatment page. You'll also find the Indication, which explains the specific condition that the medication was approved to treat by the FDA.