α1-Adrenoceptor antagonist structurally similar to Prozosin. Antihypertensive. Used in treatment of benign prostatic hypertrophy.
As an antagonist of the alpha-1 adrenergic receptor, it works by relaxing the muscles in the prostate and bladder neck, making it easier to urinate. It is thus used to treat benign prostatic hyperplasia (BPH)