Used primarily in the treatment and prevention of angina pectoris, a condition characterized by chest pain due to reduced blood flow to the heart. It works by dilating blood vessels, which reduces the workload on the heart and improves oxygen delivery. This effect helps decrease the frequency and severity of angina attacks. The compound is favored for its predictable absorption and longer duration of action compared to other nitrates, allowing for once- or twice-daily dosing. It is commonly prescribed for chronic management rather than acute relief. Tolerance may develop with continuous use, so a nitrate-free interval is often recommended.