Losar-Beta Tablet contains a combination of Atenolol 50 mg and Losartan 50 mg, formulated for the management of hypertension and related cardiovascular conditions. Atenolol is a selective beta-1 adrenergic receptor blocker that reduces heart rate, myocardial contractility, and cardiac output, thereby lowering blood pressure and decreasing oxygen demand of the heart. Losartan is an angiotensin II receptor antagonist that inhibits the vasoconstrictive effects of angiotensin II, promoting vasodilation and reducing aldosterone secretion, which helps in controlling blood pressure and preventing end-organ damage. The combined action of these agents provides a synergistic effect in controlling hypertension, improving patient compliance by reducing pill burden. Losar-Beta is indicated for patients who require dual therapy for hypertension, especially those with comorbid conditions such as left ventricular hypertrophy or diabetic nephropathy. It is essential to monitor blood pressure, renal function, and electrolytes periodically during therapy. Contraindications include hypersensitivity to either component, severe bradycardia, heart block, cardiogenic shock, and pregnancy. Common adverse effects may include dizziness, fatigue, hypotension, and gastrointestinal disturbances. Dosage should be individualized based on patient response and tolerability under medical supervision.