Displaying 2 results of Griseofulvin Stable Isotopes Griseofulvin stable isotopes are isotopically labeled versions of the antifungal medication griseofulvin. These isotopes are used in pharmacokinetic and pharmacological studies to trace the metabolic fate of the drug in vivo. Griseofulvin stable isotopes are chemically identical to the non-labeled drug but contain a stable isotope of either carbon, nitrogen, or oxygen, which can be detected and quantified by analytical techniques such as mass spectrometry.