Doxazosin mesylate, a quinazoline compound sold by Pfizer under the brand name Cardura, is an alpha blocker used to treat high blood pressure and benign prostatic hyperplasia. It works by blocking the action of adrenaline on smooth muscle of the bladder and the blood vessel walls.

MedlinePlus: Doxazosin - Provides information on usage, precautions, side effects and brand names when available. Data provided by various government agencies and health-related organizations.
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