Beta-blockers are a class of medications primarily used to manage various heart conditions. They work by blocking the effects of the hormone epinephrine, also known as adrenaline, which helps to lower heart rate and blood pressure. This makes them effective in treating issues like hypertension, angina, and certain types of irregular heartbeats. In addition to heart-related uses, beta-blockers can also help with anxiety and migraine prevention. They are often prescribed after a heart attack to improve survival rates and reduce the risk of further complications. Common examples include atenolol and metoprolol.