Term Name:	alpha-adrenergic antagonist
Synonyms:	alpha-adrenergic antagonists, alpha-adrenergic blocker, alpha-adrenergic blockers, alpha-adrenergic receptor blockaders, alpha-adrenoceptor antagonists
Definition:	An agent that binds to but does not activate alpha-adrenergic receptors thereby blocking the actions of endogenous or exogenous alpha-adrenergic agonists. alpha-Adrenergic antagonists are used in the treatment of hypertension, vasospasm, peripheral vascular disease, shock, and pheochromocytoma.
Ontology:	ChEBI [CHEBI:37890]  ( EBI )