Displaying 4 results of Fenfluramine Stable Isotopes Fenfluramine is an appetite suppressant drug that has been used in the treatment of obesity. Fenfluramine stable isotopes are non-radioactive forms of the element that can be used for research purposes. They are useful in studies that require the use of isotopically labeled compounds to track the movement and metabolism of the drug in biological systems. The stable isotopes of fenfluramine are also important in pharmacokinetic studies that help researchers understand how the drug is absorbed, distributed, metabolized, and excreted in the body.