Doxazin tablets to treat high blood pressure, Doxazin 4 milligram tablets to treat benign prostatic hyperplasia, and it is also used to treat high blood pressure, but it is not classified as an essential medicine for treating high blood pressure. It is taken with other medications and is tablets that contain doxazosin at a concentration of 4 milligrams and reduces the risk of strokes, kidney complications, and heart attacks.