Cardura

Doxazosin is in a group of drugs called alpha-adrenergic blockers. Doxazosin causes the blood vessels (veins and arteries) to relax and expand, improving blood flow. Doxazosin also relaxes muscles in the prostate and bladder neck, making it easier to urinate. Doxazosin is used to treat hypertension (high blood pressure) and benign prostatic hyperplasia (enlarged prostate).