In light of the growing interest in the concept of`uroselectivity' and in the increased worldwide use of alpha-blockers for benign prostatic hyperplasia (BPH), this review evaluates the relative bene®ts of various alpha-blocking agents in the treatment of BPH. The pharmacological and physiological selectivity as well as the clinical ef®cacy and safety of alfuzosin, doxazosin (Cardura 1 ), tamsulosin (Flomax 1 ), and terazosin (Hytrin 1 ) are compared. In reviewing ef®cacy and safety, emphasis is given to 17 placebo-controlled, doubleblind trials of these alpha-blockers published in peer-reviewed journals. This review also considers long-term data, effects on blood pressure, costs, and dose ranges.