What is the effect of beta blockers on heart rate?

Beta blockers are a class of medications that primarily act by blocking the effects of epinephrine (adrenaline) on beta-adrenergic receptors in the heart. This action leads to a reduction in heart rate, particularly during physical exertion or stress. By inhibiting these receptors, beta blockers decrease the overall sympathetic stimulation of the heart, resulting in a slower heart rate.

This reduction in heart rate can be particularly beneficial for individuals with conditions such as hypertension, heart failure, or certain types of arrhythmias. By decreasing the workload on the heart and reducing oxygen consumption, beta blockers can help manage symptoms and improve overall cardiovascular function.

In summary, the key effect of beta blockers on heart rate is to decrease it, contributing to their therapeutic effects in various cardiovascular conditions.