Displaying 3 results of Norgestimate Stable Isotopes Norgestimate is a synthetic progestin used in combination with estrogen in oral contraceptives. Stable isotopes of norgestimate can be used in pharmacokinetic studies to better understand drug metabolism, distribution, and elimination. These isotopes are non-radioactive and do not cause harm to the body. They can be traced and measured in biological samples to provide valuable insight into drug efficacy and safety.