-- 7. Drug approvals-with strings attached. The FDA allowed the multiple sclerosis drug Tysabri back on the market, with careful restrictions to ensure patients are closely monitored. The drug had been withdrawn in 2004 because of rare cases of brain infection. Several years ago the agency let Lotronex, the controversial irritable bowel syndrome drug, back on the market, but with restrictions. These actions show a shift to modified approvals by the FDA rather than only the traditional yes-or-no rulings.
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