Displaying 2 results of Fenpiverinium Stable Isotopes Fenpiverinium is a medication used to relieve symptoms of irritable bowel syndrome and gastrointestinal disorders. Fenpiverinium stable isotopes refer to the non-radioactive forms of the elements present in the medication. These isotopes are used in research and development of new drugs, as well as in medical imaging techniques. The use of stable isotopes in medicine is an important area of study and can provide valuable insights into the effects of drugs on the body.