Displaying 3 results of Nitrendipine Stable Isotopes Nitrendipine is a dihydropyridine calcium channel blocker used to treat hypertension and angina. Nitrendipine stable isotopes are isotopically labeled versions of the drug that have a constant atomic mass, making them useful for pharmacokinetic and pharmacodynamic studies. These isotopes can be used for metabolic studies, drug interaction studies, and as internal standards in mass spectrometry.