The U.S. Food and Drug Administration approved Ampyra (dalfampridine) extended release tablets to improve walking in patients with multiple sclerosis (MS). In clinical trials, patients treated with Ampyra had faster walking speeds than those treated with an inactive pill (placebo). This is the first drug approved for this use. MS is a chronic, often disabling, disease that affects the central nervous system the brain, spinal cord, and optic nerves. There are about 400,000 people in the United States and 2.5 million people world-wide with MS...
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