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alpha blocker
alpha blocker An alpha blocker is a natural or synthetic substance that prevents alpha-adrenergic receptors in the sympathetic nervous system from being activated by the body’s usual chemical messengers.
An alpha blocker is a natural or synthetic substance that prevents alpha-adrenergic receptors in the sympathetic nervous system from being activated by the body’s usual chemical messengers. By blocking these signals, it can produce effects such as widening blood vessels, slowing heart rate, and constricting the pupils.