Atenolol is a medicine used to treat high blood pressure (hypertension), and angina, and to reduce the risk of a heart attack. It belongs to a class of remedies called beta-blockers. Atenolol works by blocking the action of certain hormones, such as adrenaline. It helps to reduce blood pressure and heart rate, which can improve symptoms of hypertension and angina. It is used only once a day to get rid of the conditions that can hamper your health in long run. Similar/ Related Products: Tenormin