Displaying 7 results of Loperamide Stable Isotopes Loperamide is a medication used to treat diarrhea. Stable isotopes of loperamide are used in pharmacokinetic studies to track the absorption, distribution, metabolism, and excretion of the drug in the body. These isotopes provide valuable information for drug development, dosage optimization, and therapeutic monitoring. Loperamide stable isotopes are also useful for forensic toxicology and doping control analysis.