Isordil 10 Tablet contains Isosorbide Dinitrate 10 mg, a nitrate vasodilator primarily used in the management of angina pectoris and heart failure. It functions by relaxing vascular smooth muscle, leading to the dilation of peripheral veins and arteries, which reduces myocardial oxygen demand by decreasing preload and afterload. This action helps alleviate chest pain associated with coronary artery disease by improving blood flow to the heart muscle. Isordil 10 is indicated for the prevention and treatment of angina attacks and may be used adjunctively in congestive heart failure to improve symptoms and exercise tolerance. The onset of action typically occurs within 30 minutes, with effects lasting several hours, making it suitable for both acute and prophylactic use. Dosage should be individualized based on patient response and clinical condition, with careful monitoring to avoid tolerance development. Common side effects include headache, dizziness, hypotension, and flushing. Caution is advised in patients with hypotension, severe anemia, or increased intracranial pressure. Isordil 10 should not be used concomitantly with phosphodiesterase inhibitors due to the risk of severe hypotension. Regular medical supervision is essential to optimize therapy and minimize adverse effects.