Nimocal 30 mg Tablet contains Nimodipine, a calcium channel blocker that selectively relaxes cerebral blood vessels. It is primarily used to prevent and reduce the severity of neurological deficits resulting from subarachnoid hemorrhage (SAH), a type of bleeding around the brain often caused by ruptured aneurysms. By improving cerebral blood flow, Nimocal helps minimize brain damage and supports neurological recovery.