Displaying 17 results of Pheniramine Stable Isotopes Pheniramine is an antihistamine drug that is used to treat allergy symptoms such as itching, runny nose, and watery eyes. Stable isotopes of Pheniramine are non-radioactive forms of the drug that are used in research and development to study the drug's pharmacokinetics and metabolism. The use of stable isotopes allows for precise measurements and tracking of the drug's movement within the body. This information is important for understanding how the drug works and how it can be optimized for better efficacy and safety.