What is isosrbide?

Isosorbide is a medication primarily used to prevent and treat angina pectoris, a type of chest pain caused by reduced blood flow to the heart. It is a nitrate that works by relaxing and dilating blood vessels, which improves blood flow and reduces the heart's workload. Isosorbide can be administered in various forms, including oral tablets and extended-release formulations. It is also used in some cases to manage heart failure and pulmonary hypertension.