Doxapress from Micro Labs contains Doxazosin
Below are some of the details of Doxazosin(generic)
Doxazosin mesylate, a quinazoline compound sold by Pfizer under the brand names Cardura and Carduran, is an alpha blocker used to treat high blood pressure and benign prostatic hyperplasia.
It is an alpha-1 adrenergic receptor blocker that inhibits the binding of norepinephrine to alpha receptors in the autonomic nervous system. The primary effect of this blockage is relaxed vascular smooth muscle tone (vasodilation), which decreases peripheral vascular resistance, leading to decreased blood pressure.