Beta Blockers Index

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Beta blockers are a class of drugs that block beta-adrenergic substances such as adrenaline (epinephrine), a key agent in the "sympathetic" portion of the autonomic (involuntary) nervous system and activation of heart muscle. By blocking the action of the involuntary nervous system on the heart, beta blockers relieve stress on the heart. Beta blockers serve to treat abnormal and irregular heart rhythms, chest pain, heart attack, hypertension, migraines, social phobias, tremors, and glaucoma. The beta blockers (with brand names) include acebutolol (Sectral), atenolol (Tenormin), bisoprolol (Zebeta), metoprolol (Lopressor, Lopressor LA, Toprol XL), nadolol (Corgard), and timolol (Blocadren).

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