Beta blockers (sometimes written as β-blockers) are a class of drugs used for various indications, but particularly for the management of hypertension and cardiac arrhythmias. Beta blockers may also be referred to as beta-adrenergic blocking agents, beta-adrenergic antagonists, or beta antagonists.

Pharmacology

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Beta blockers block the action of endogenous catecholamines, epinephrine (adrenaline) and norepinephrine (noradrenaline) in particular, on β-adrenergic receptors, part of the sympathetic nervous system which mediates the "fight or flight" response.

There are three known types of beta receptor, designated β₁, β₂ and β₃. β₁-Adrenergic receptors are located mainly in the heart, kidney, and adipose tissue. β₂-Adrenergic receptors are located mainly in the heart, lung, GI tract, liver, pancreas, and skeletal muscle. The role and location of β₃-receptors is less well-defined.

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Chinese whisper: Someone selling beta blockers has opened a community gateway.
Ciaran_Laval (Ciaran Laval) Fri, 06 Nov 2009 20:04:48 -0000
Chinese whisper: Someone selling beta blockers has opened a community gateway.
@donnaj819 Already had it! Ultra sound=good, EKG=good, Stress test=good, Blood pressure=high again. Might have to go on beta blockers :(
BobbieCavanaugh (Bobbie Cavanaugh) Fri, 06 Nov 2009 16:22:19 -0000
@donnaj819 Already had it! Ultra sound=good, EKG=good, Stress test=good, Blood pressure=high again. Might have to go on beta blockers :(
Are There Clinically Important Differences Between Beta-Blockers... http://tinyurl.com/yc75gbw
mmarx9i0x (Margo Rivers) Fri, 06 Nov 2009 14:48:46 -0000
Are There Clinically Important Differences Between Beta-Blockers... http://tinyurl.com/yc75gbw
What Is Graves' Disease? What Causes Graves' Disease?: Beta blockers are generally effective medication.. http://bit.ly/1zZXQ
anthony_851 (Anthony Creek) Fri, 06 Nov 2009 10:28:03 -0000
What Is Graves' Disease? What Causes Graves' Disease?: Beta blockers are generally effective medication.. http://bit.ly/1zZXQ
I'm an alpha male on beta blockers. I have a love child who sends me hate mail.
joeyimage (Joey Image) Thu, 05 Nov 2009 21:13:27 -0000
I'm an alpha male on beta blockers. I have a love child who sends me hate mail.
Updated practice guidelines from ACC and AHA for the perioperative use of beta-blockers in noncardiac surgery... http://bit.ly/3HlGdq
HayesInc (Hayes, Inc) Thu, 05 Nov 2009 13:44:12 -0000
Updated practice guidelines from ACC and AHA for the perioperative use of beta-blockers in noncardiac surgery... http://bit.ly/3HlGdq

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