Displaying 6 results of Nisoldipine Impurities Nisoldipine is a dihydropyridine calcium channel blocker used to treat hypertension. However, during the manufacturing process, impurities may be introduced, which can impact the efficacy and safety of the drug. These impurities can include organic and inorganic compounds, such as solvents, degradation products, and heavy metals. Ensuring the purity of Nisoldipine is essential to ensure its effectiveness and safety for patients.