Nicardipine is primarily used in the management of hypertension and angina. It works by relaxing the blood vessels, which helps to lower blood pressure and improve blood flow to the heart. This makes it effective in treating high blood pressure, reducing the risk of strokes, heart attacks, and kidney problems. It is also used to control chronic stable angina by preventing chest pain caused by reduced blood flow to the heart. In clinical settings, it is sometimes administered intravenously to quickly manage severe high blood pressure or hypertensive emergencies. Additionally, it may be used in certain cases to prevent cerebral vasospasm following subarachnoid hemorrhage. Its ability to selectively act on vascular smooth muscle with minimal impact on heart muscle makes it a valuable option for patients with cardiovascular conditions.