Tysabri, a drug initially used to treat Multiple Sclerosis has been approved for use in certain patients with Crohn's disease. This drug is not without risk and is to be prescibed only for patients with moderate-to-severe Crohn's disease who have failed with other drugs like Remicade and Humira. It should be available by the end of February 2008.
According to an article in today's issue of the Wall Street Journal, Tysabri is sold jointly by Elan Corp. and Biogen Idec Corp. The drug was...

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