Amlodipine 5mg and Atenolol 50mg tablets are used to treat hypertension (high blood pressure) and angina (chest pain) by working together to relax blood vessels, slow heart rate, and reduce the heart's workload, ultimately lowering blood pressure and reducing the risk of heart attack and stroke. The amlodipine component widens blood vessels, while the atenolol component blocks stress hormones, making it easier for the heart to pump blood.