Beta blockers, also known as beta-adrenergic blocking agents, are a class of drugs that works by blocking the neurotransmitters norepinephrine and epinephrine from binding to receptors. Beta blockers are medications used to lower blood pressure and manage heart rhythms. See a list of the different types of beta blocker such as metoprolol, atenolol, and more. Beta-blockers lower your blood pressure and treat conditions such as heart failure, angina, and migraine. Some only work on your heart, while some affect other parts of your body. Beta-blockers treat a wide range of cardiovascular conditions, like high blood pressure. They slow down your heart rate and relax your blood vessels. Beta-blockers are drugs that can lower stress on the heart and blood vessels by blocking the action of adrenaline. They can also help manage migraine, anxiety, tremor, and other conditions. Beta-blockers work by blocking the effect of adrenaline on the heart, which slows the heart rate, softens the force of each beat, and lowers blood pressure. They are used for far more than blood pressure. Beta blockers are widely used for the treatment of hypertension. Beta-blockers are a class of medication used to block the effects of stress hormones such as adrenaline on the heart. Beta blockers, also known as beta-adrenergic blocking agents, are drugs that block norepinephrine and epinephrine (adrenaline) from binding to beta receptors on nerves. Beta blockers are medicines that lower blood pressure. They also may be called beta-adrenergic blocking agents. These medicines block the effects of the hormone epinephrine, also known as adrenaline. Beta blockers cause the heart to beat more slowly and with less force. This lowers blood pressure.