Displaying 3 results of Cimetidine Stable Isotopes Cimetidine stable isotopes are a type of isotopes that are non-radioactive and chemically identical to their natural counterparts. They are commonly used in scientific research and medical applications, particularly in drug metabolism studies and pharmacokinetic analysis. Cimetidine is a histamine H2-receptor antagonist that inhibits stomach acid production and is used to treat various gastrointestinal disorders. The stable isotopes of cimetidine can be labeled with heavier isotopes such as carbon-13 or nitrogen-15 to enable tracking and analysis of drug metabolism in vivo.