Displaying 6 results of Nimodipine Impurities Nimodipine is a calcium channel blocker used to treat conditions such as high blood pressure and subarachnoid hemorrhage. Nimodipine impurities refer to any substances present in the drug that are not the active ingredient, nimodipine. These impurities can be natural or synthetic and may affect the quality, safety, or efficacy of the drug. The presence and amount of impurities are closely monitored to ensure that the drug is safe and effective for human use.