Atenolol (UK) 100mg is a beta-blocker medication primarily used to treat high blood pressure (hypertension), angina (chest pain), and certain heart rhythm disorders. It works by blocking the effects of adrenaline on the heart, slowing down the heart rate and reducing blood pressure. This helps prevent strokes, heart attacks, and kidney problems. Atenolol is often prescribed as part of a long-term treatment plan for cardiovascular conditions. Always take this medication as directed by your healthcare provider to ensure optimal results and minimize side effects.