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goopy
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What Are Beta-Blockers? What Are Beta-Blockers For?
Written by WitchWay   
13 March 2012
What Are Beta-Blockers? What Are Beta-Blockers For?04 Dec 2009 

Beta-blockers, also known as beta-adrenergic blocking agents, beta-adrenergic antagonists, or beta antagonists, are a type of drug that block the action of the sympathetic nervous system of the heart, resulting in a relief of stress on the heart.

A beta-blocker blocks beta-adrenergic substances, for example adrenaline (apinephrine) in the involuntary nervous system (autononomic nervous system). Beta-blockers slow down the heart beat, reduce the force of the heart muscle's contractions, and decrease blood vessel contraction in the heart, brain, and the rest of the body.



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