What is one of the primary effects of beta blockers?

One of the primary effects of beta blockers is to reduce heart rate. Beta blockers work by blocking the action of epinephrine and norepinephrine on beta-adrenergic receptors in the heart. This action leads to a decrease in heart rate and myocardial contractility, which ultimately lowers the workload on the heart. Consequently, beta blockers are commonly prescribed for conditions such as hypertension, heart failure, and certain types of arrhythmias, where controlling heart rate is essential for managing the patient's condition and reducing cardiovascular risk. This therapeutic effect is particularly beneficial in preventing excessive heart rates during stress or physical activity, contributing to overall cardiovascular health.