Beta-blockers target hormones, specifically epinephrine, also known as adrenaline. Also known as beta-adrenergic blocking agents, beta-blockers work by blocking the effects of adrenaline, causing the heart to beat slower and with less force. These medications essentially influence an individual's heart rate, helping reduce their overall blood pressure. They also help reduce the workload on the heart and open up the blood vessels as well, promoting healthier blood circulation. Beta-blockers include acebutolol, bisoprolol, esmolol, nadolol, atenolol, metoprolol, and propranolol.