alpha-blocker

alpha-blocker definition - medical

alpha-blocker

noun
A drug that opposes the excitatory effects of norepinephrine released from sympathetic nerve endings at alpha-adrenergic receptors and causes vasodilation and a decrease in blood pressure. Also called alpha-adrenergic blocking agent.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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