Displaying 5 results of Ropinirole Stable Isotopes Ropinirole is a dopamine agonist medication used to treat Parkinson's disease and restless legs syndrome. Stable isotopes of ropinirole refer to the non-radioactive forms of the drug that have the same chemical and physical properties as the naturally occurring isotopes. These isotopes can be used in research studies to track the metabolism and distribution of ropinirole in the body.