Displaying 3 results of Flecainide Stable Isotopes Flecainide is a medication used to treat abnormal heart rhythms. Stable isotopes are non-radioactive forms of chemical elements that are used in medical research. Flecainide stable isotopes are a specialized type of this medication that contains isotopes with a different number of neutrons, allowing for more precise analysis of its effects on the body. These isotopes can be used in studies to understand how flecainide works and how it can be improved to better treat heart conditions.