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Drug Classes & Actions : Beta Blockers Cheat Sheet (DRAFT) by

This is a draft cheat sheet. It is a work in progress and is not finished yet.

Commonly Prescribed For...

Myocardial Infarction
Glaucoma
Angina
Migraine
Hypert­ension
Phaeoc­hro­moc­ytoma
CHF
Anxiety Disorders
Arrhythmia
Hypert­hyr­oidism

Indica­tions

Compet­itive Antagonist
Beta-A­dre­nergic Blocking Agent
Antihy­per­tensive

Mechanism Of Action

β-1
Located in heart & kidneys: Stimul­ation produces renin release, and induce positive chrono­tropic and inotropic effects on the heart, increase cardiac conduc­tion, increase cardiac velocity, and increase cardiac automa­ticity.
β-2
Located lungs, GI tract, liver, uterus, vascular smooth muscle, and skeletal muscle: When stimulated this site produces vasodi­lation, bronch­odi­lation, uterine relaxa­tion, smooth muscle relaxa­tion, tremor in skeletal muscles, and increases glycog­eno­lysis
β-3
Located in fat cells: Stimul­ation induces lipolysis
Blocks the binding sites on adrenergic beta receptors: These receptors belong to the SNS which control fight or flight response. Beta Blockers compete with adrenaline and noradr­enaline (both sympat­hetic neurot­ran­smi­tters) at the three beta receptor binding sites.

Generic & Trade Names

Generic
Trade
Route