Displaying 6 results of Velpatasvir Stable Isotopes Velpatasvir is a medication used in combination with other antiviral drugs to treat chronic hepatitis C infections. Stable isotopes of Velpatasvir are non-radioactive isotopes that have a constant atomic mass. These isotopes are used in research and drug development to track the distribution, metabolism, and elimination of the drug in the body. They are also used in clinical studies to determine the safety and efficacy of the drug.