Dangerous Drug Alert: The MS Drug Tysabri

What is Tysabri?

Tysabri, known generically as natalizumab, is used to reduce the frequency of multiple sclerosis relapses, as well as to treat Crohn's disease.

Manufactured by Biogen IDEC and Elan, the makers voluntarily withdrew the drug from the market in February 2005 after three patients contracted progressive multifocal leukoencephalopathy (PML) during clinical trials.

Possible Side Effects of Taking Tysabri

Progressive multifocal leukoencephalopathy is a rare and often deadly viral infection of the brain. The patients who contracted PML during Tysabri clinical trials had been on the drug for more than two years, and using the drug, Avonex, in combination with their Tysabri treatment.

FDA Approves Tysabri Again

In June 2006, the Food and Drug Administration (FDA) approved an application to reintroduce Tysabri as monotherapy treatment for relapsing MS patients because its benefits outweighed its risks. Tysabri should only be prescribed if all other treatments have failed.

Tysabri Label Changes

In August 2008, the FDA announced that the Tysabri label was changed to better reflect the risks of the drug. Along with identifying Tysabri strictly as a final alternative, the new label also included updated language regarding the risks of PML.

Lawyers Who Understand Dangerous Drug Cases

If you, or someone you care about, were hurt because of taking Tysabri you need to act quickly. When our law firm gets involved with your case, we immediately get to work investigating the cause of your drug reaction and fighting for your legal rights to fair compensation.

Get Answers to Your Questions:

Do you have a case? Find out the criteria we use to determine if you have a legal claim.
Do you need a lawyer? See how hiring a lawyer gets you a better outcome.
How much will it cost? You pay nothing unless we win money for you.

Tysabri News

Injured Because You Took Tysabri? Contact Us Now For a Free Evaluation of Your Legal Case.

Call us toll-free at 1-866-943-3427 or get online legal help, and we'll give you a free evaluation of your claim.

Please note: All of our lawyers are licensed to practice in the state of Pennsylvania. We also have lawyers licensed to practice in Ohio, West Virginia, Maryland, and Virginia and we associate with experienced attorneys in other states. In addition, all drug-related litigation involves co-counsel.

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