Dalfampridine
"I started Ampyra five weeks ago. The first full day I was miserable with nausea but over the next few days the nausea lessened. Three weeks into taking it I realized that I wasn't tripping anymore and my right leg footdrop was all but gone. Now I'm trying to strengthen my leg muscles and walking on the treadmill and riding the exercise bike everyday. I've had RRMS for 17 years. Four years ago I was easily walking three miles a day without any problems, but over those last few years I was weakening, tripping, falling. I couldn't even walk a half mile. I was in a leg brace and using a cane frequently. Just seeing a set of stairs I was going to have to climb put me "over the edge". Now I'm going up the stairs and starting to walk much better."