Ismoaid 20 Tablet contains Isosorbide Mononitrate 20 mg, a nitrate class vasodilator primarily used in the prevention and management of angina pectoris due to coronary artery disease. Isosorbide Mononitrate acts by relaxing vascular smooth muscle, leading to dilation of peripheral veins and arteries, which reduces myocardial oxygen demand by decreasing preload and afterload. This mechanism helps alleviate chest pain associated with ischemic heart conditions. Ismoaid 20 is indicated for the prophylactic treatment of angina pectoris and is not intended for acute angina attacks. The medication is typically administered orally once or twice daily, with dosing adjusted based on clinical response and tolerance. Common side effects may include headache, dizziness, hypotension, and flushing, which generally diminish with continued use. Caution is advised in patients with hypotension, severe anemia, or those using phosphodiesterase inhibitors due to the risk of significant hypotension. Ismoaid 20 should be used under medical supervision, with regular monitoring to optimize therapeutic outcomes and minimize adverse effects. Patients are advised to adhere strictly to prescribed dosages and report any unusual symptoms promptly to their healthcare provider.