alpha-blocker (redirected from alpha-adrenergic antagonist)

al·pha-block·er (lf-blkr)

n.

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

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alpha-blocker

n

(Medicine / Pharmacology) any of a class of drugs that prevent the stimulation of alpha adrenoceptors, a type of receptor in the sympathetic nervous system, by adrenaline and noradrenaline and that therefore cause widening of blood vessels: used in the treatment of high blood pressure and prostatic hyperplasia

Thesaurus

Noun

1.

alpha-blocker - any of various drugs that block alpha-adrenergic receptors; used in treating benign prostatic hyperplasia; relaxes the muscles of the prostate and bladder alpha blocker, alpha-adrenergic blocker, alpha-adrenergic blocking agent blocking agent, blocker - a class of drugs that inhibit (block) some biological process Minipress, prazosin - antihypertensive drug (trade name Minipress) Hytrin, terazosin - antihypertensive drug (trade name Hytrin) used to treat high blood pressure