Betaloc CRBelokAstra Zeneca. Rx quality 3 x 30 Tablets 95mg . Betaloc CR tablets are used for:#lowering high blood pressure, also called hypertension, and to reduce the risk of complications due to high blood pressure such as stroke, heart attack or early death. #preventing angina (heart or chest pain brought on by stress or exercise in patients with coronary heart disease). #treating or preventing heart attacks, or to reduce your risk of heart complications following a heart attack. #treating heart failure (symptomatic mild to severe chronic heart failure .