Doxazosin mesylate

Doxazosin mesylate is the mesylate salt form of doxazosin, a quinazoline compound that selectively blocks alpha-1-adrenergic receptors. This action relaxes smooth muscle in the bladder neck and prostate, reducing obstruction and urethral resistance associated with benign prostate hyperplasia, and also causes vasodilation in peripheral vascular smooth muscle, lowering peripheral vascular resistance.