Atenolol (Zenobloc 50) 50mg Film Coated Beta Blocking Agent Tablet 100's is a medication used to treat various heart-related conditions, including high blood pressure (hypertension), chest pain (angina), and to reduce the risk of heart attack. As a beta-blocker, it works by blocking the effects of adrenaline on the heart, leading to a slower heart rate, reduced blood pressure, and less strain on the heart. It may also be used for certain types of arrhythmias (irregular heartbeats) and to prevent migraines. Always follow your healthcare provider’s instructions and dosage recommendations.