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An irreversible α-antagonist. Used in the treatment of hypertension, it has a relatively slow onset and prolonged effect when compared to alternative α-blockers.
Phenoxybenzamine hydrochloride is an alpha-adrenergic antagonist with long duration of action. It has been used to treat hypertension and as a peripheral vasodilator.
Phenoxybenzamine is not useful in the treatment of essential hypertension because of its side effects, particularly reflex tachycardia.
Use with great caution in patients in whom a fall in blood pressure and/or tachycardia may be undesirable, such as the elderly or those with severe heart disease, congestive heart failure, cerebrovascular disease or renal damage. The mode of action should be borne in mind, if used concurrently with α-sympatho-mimetics or myocardial depressants.
Phenoxybenzamine is carcinogenic in the rat and has shown mutagenic activity in the bacterial Ames test and mouse lymphoma assay. It should only be used after very careful consideration of the risks, in patients in which alternative treatment is inappropriate.
Phenoxybenzamine hydrochloride is an alpha-adrenergic antagonist with long duration of action. It has been used to treat hypertension and as a peripheral vasodilator.
Phenoxybenzamine is not useful in the treatment of essential hypertension because of its side effects, particularly reflex tachycardia.
Use with great caution in patients in whom a fall in blood pressure and/or tachycardia may be undesirable, such as the elderly or those with severe heart disease, congestive heart failure, cerebrovascular disease or renal damage. The mode of action should be borne in mind, if used concurrently with α-sympatho-mimetics or myocardial depressants.
Phenoxybenzamine is carcinogenic in the rat and has shown mutagenic activity in the bacterial Ames test and mouse lymphoma assay. It should only be used after very careful consideration of the risks, in patients in which alternative treatment is inappropriate.