Beasley, Allen, Crow, Methvin, Portis & Miles, P.C.

The Food and Drug Administration is updating health care professionals about a medication used to treat patients with relapsing forms of multiple sclerosis (MS) and moderately to severely active Crohn’s disease. New safety information indicates that the risk of developing a rare but life-threatening brain infection known as progressive multifocal leukoencephalopathy (PML) increases with the number of infusions received of Tysabri (natalizumab). The announcement updates a September 2009 warning about PML associated with use of the Tysabri.

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