- Men aged greater than or equal to 50 years with a history of lower urinary tract symptoms (LUTS) related to BPH for greater than or equal to 6 months, an International Prostate Symptom Score (I-PSS) (0 to 35 points scale) of at least 13 points, a maximum urinary flow rate (Qmax) between 5 and 12 mL/sec (with a voided volume of greater than or equal to 150 mL), a residual urine volume of less than or equal to 350 mL, and a bothersomeness score (0 to 6 points scale) of at least 3 points. All patients will undergo prostate size assessment by transrectal ultrasonography (TRUS) if not done within past 12 months.