Displaying 3 results of Dipyridamole Stable Isotopes Dipyridamole is a medication used to prevent blood clots in people who have had heart valve replacements or who have a history of blood clots. Stable isotopes of dipyridamole are used in research to study the pharmacokinetics and metabolism of the drug. These isotopes have the same chemical properties as the non-radioactive form, but do not decay over time and can be safely used in experiments.