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Beta Blockers Drug Information

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What are beta blockers and how do they work?

Beta blockers, also known as beta-adrenergic blocking agents, are a class of drugs that works by blocking the neurotransmitters norepinephrine and epinephrine from binding to receptors. There are three known types of beta receptors, known as beta11), beta22) and beta33).

When the neurotransmitters are prevented from binding to the receptors, it in turn causes the effects of adrenaline (epinephrine) to be blocked. This action allows the heart to relax and beat more slowly thereby reducing the amount of blood that the heart must pump. Over time, this action improves the pumping mechanism of the heart.




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