Ampyra (generic: dalfampridine) is a prescription medication used to improve walking in adults with multiple sclerosis (MS).  Ampyra belongs to a group of drugs called potassium channel blockers, which strengthen nerve signals in the brain harmed by MS.

This medication comes in tablet form and is typically taken twice daily, with or without food.

Common side effects of Ampyra include difficulty sleeping, dizziness, headache, and nausea.