Beta blockers, also known as beta-adrenergic blocking agents, are drugs that block norepinephrine and epinephrine (adrenaline) from binding to beta receptors on nerves. There are three types of beta receptors and they control several functions based on their location in the body.
- Beta-1 (β1) receptors are located in the heart, eye, and kidneys;
- beta (β2) receptors are found in the lungs, gastrointestinal tract, liver, uterus, blood vessels, and skeletal muscle; and
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