Among the most important drugs used by cardiologists according to the British Heart Foundation. They work by blocking the release of the stress hormones adrenaline and noradrenaline, resulting in slowing of heart rate. They can also block your kidneys from producing a hormone called angiotensin II which lowers blood pressure. Lowered heart rate and blood pressure reduces the workload of your heart. Beta blockers reduce the frequency of angina attacks, reduce symptoms caused by atrial fibrillation, help control blood pressure and reduce the risk of further heart attacks. It is recommended to start beta blocker treatment when your condition stabilises and continue to take them indefinitely.
Side Effects:
Common side effects can include tiredness, cold hands and feet, slow heartbeat, diarrhoea, sickness. Less common side effects include difficulty sleeping and erectile dysfunction. However, beta blockers are usually tolerated well without significant side effects. If you think you may be experiencing side effects speak with your GP who may be able to reduce the dose or switch to a different beta blocker.
It is important to not suddenly stop taking beta blockers without consulting your doctor. This can cause problems such as palpitations and recurrence of angina pain.