Used primarily to prevent vasospasm following subarachnoid hemorrhage, nimodipine helps improve neurological outcomes by maintaining cerebral blood flow. It selectively acts on cerebral arteries, reducing the risk of ischemic deficits after aneurysmal rupture. Due to its ability to cross the blood-brain barrier effectively, it is administered orally and sometimes via enteral routes in critical care settings. It is not typically used for general hypertension or other cardiovascular conditions, as its main therapeutic benefit lies in neuroprotection post-hemorrhage.