Displaying 6 results of Sotalol Stable Isotopes Sotalol is a medication used to treat heart arrhythmias. Stable isotopes are non-radioactive forms of elements that behave similarly to their radioactive counterparts, but can be used safely in medical research and drug development. Sotalol stable isotopes are useful in studying the pharmacokinetics and metabolism of the drug, as well as in developing new formulations with improved efficacy and reduced side effects.