Displaying 2 results of Pirfenidone Stable Isotopes Pirfenidone is a medication used to treat a lung disease called idiopathic pulmonary fibrosis. Stable isotopes of Pirfenidone are used in pharmacological research to study the drug's metabolic pathways, pharmacokinetics, and drug interactions. These isotopes are a valuable tool for drug development, allowing researchers to gain a deeper understanding of how the medication works and how it can be optimized for better patient outcomes.