Displaying 3 results of Propantheline Stable Isotopes Propantheline is a medication used to treat a variety of conditions, including irritable bowel syndrome and peptic ulcers. Propantheline stable isotopes are a form of the drug that contains non-radioactive isotopes, making them safe for use in research and medical applications. These isotopes are used for labeling and tracing studies in pharmacokinetics and pharmacodynamics research.