What are Beta-blockers
Beta-blockers have been proven to extend life and improve the symptoms of heart failure. Your doctor may start you on a low dose and increase it over a few weeks or months.
They work by slowing your heart rate and reducing blood pressure. Your doctor will probably start you on a beta-blocker after you have started taking an ACE inhibitor.
The most common side effects are tiredness, cold hands and feet, insomnia, dizziness or giddiness.