Dalfampridine is used to improve walking in people who have multiple sclerosis (MS; a disease in which the nerves do not function properly and may cause weakness, numbness, loss of muscle coordination, and problems with vision, speech, and bladder control). Dalfampridine may be used alone or with other medications that control the symptoms of MS. Dalfampridine is in a class of medications called potassium channel blockers. It works by strengthening the signals sent by the brain through nerves that have been damaged by MS.
