Doxazosin Mesylate is primarily used in the treatment of high blood pressure (hypertension) and symptoms of benign prostatic hyperplasia (BPH). It works by relaxing blood vessels and muscles in the prostate and bladder neck, improving blood flow and reducing urinary difficulties. This medication is often prescribed when other treatments are not effective or suitable. It is typically taken orally in tablet form, with dosage adjusted based on individual response and medical condition. Regular monitoring of blood pressure and prostate health is recommended during treatment to ensure effectiveness and minimize potential side effects.