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 conditions such as hypertension, angina, and heart failure. In addition to heart-related issues, beta blockers can also be prescribed for anxiety, migraines, and certain types of tremors. Common examples include atenolol and metoprolol. While generally safe, they may cause side effects like fatigue or dizziness, so it's important to use them under a doctor's guidance.