Used in the treatment of hypertension due to its potent and selective inhibition of the alpha-1 adrenergic receptors. It promotes vasodilation by blocking the action of norepinephrine on vascular smooth muscle, leading to reduced peripheral resistance and lower blood pressure. Its high selectivity minimizes central nervous system side effects, making it suitable for long-term management of high blood pressure. Also investigated for use in benign prostatic hyperplasia, where it helps relax smooth muscle in the prostate and bladder neck, improving urine flow.