Displaying 1 results of Dalfampridine Stable Isotopes Dalfampridine is a medication used to improve walking ability in patients with multiple sclerosis. Stable isotopes of dalfampridine are non-radioactive isotopes used in research and drug development to understand the pharmacokinetics and metabolism of the drug. These isotopes are chemically identical to the regular compound, but have a different atomic weight, allowing for precise measurement and analysis.