Welcome to the Relapsing MS community

Are you ready to unleash your inner fighter?

Welcome to the community where thousands of people with relapsing multiple sclerosis (MS) won't let their disease get the best of them.

We're confident you are ready to unleash your inner fighter. This is one resource among many, such as your doctor, that can help you learn a whole lot about relapsing MS and treatment with TYSABRI® (natalizumab).

Ready to get started? There's no time to lose.

TYSABRI has been
administered more than 2
million times*
As of June 2014.

Why You Should Attend a
Relapsing MS Event

There is more to explore.

Events cover a wide range of topics and are a great resource for learning new ways to manage your relapsing MS. Events are also a great place to hear from people just like you. Sign up.

What Do You Fight For?

How you choose to battle relapsing MS
is a personal decision.

These videos take an unscripted look at the lives of real people* with relapsing MS. Although your story may unfold differently, we hope you'll find inspiration in their words. Watch Rick's Story

*These are paid TYSABRI patient spokespeople.

Watch Stories of
Inner Strength

The Cost of Care

We can help you find the most affordable way to start and continue receiving TYSABRI.


There's More to the TYSABRI Story

Sign up for the latest treatment info, upcoming events, and much more.

Register today

Get Started on TYSABRI

Looking for a doctor or infusion center?

Find one in an area near you

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TYSABRI® (natalizumab) is a prescription medicine used to treat adults with relapsing forms of multiple sclerosis (MS) to slow the worsening of symptoms common in people with MS and to decrease the number of flare-ups (relapses). TYSABRI increases the risk of progressive multifocal leukoencephalopathy (PML). 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 this risk.

Important Safety Information

TYSABRI increases your risk of getting a rare brain infection—called progressive multifocal leukoencephalopathy (PML)—that usually leads to death or severe disability.

Before receiving TYSABRI, it is important to tell your doctor:
TYSABRI can cause serious side effects. If you have any of the symptoms listed below, call your doctor right away:
The most common side effects of TYSABRI are:
These are not all of the possible side effects of TYSABRI. For more information, ask your doctor. To report side effects to FDA, please call 1-800-FDA-1088.

Please see Full Prescribing Information (PDF) including Boxed Warning and Patient Medication Guide (PDF).

This information is not intended to replace discussions with your healthcare provider.