Displaying 1 results of Drotaveraldine Stable Isotopes Drotaverine is a spasmolytic drug used to treat various conditions that cause smooth muscle contractions. Drotaverine stable isotopes are isotopically labeled versions of the drug that have a stable atomic composition and are used in research studies to investigate the pharmacokinetics and metabolism of the drug. These isotopes can be used to trace the fate of the drug in biological systems and provide insight into its mechanism of action.