At Visit 1 (Day 1), the eligible patients will receive a prescription for Progut from their physician. Depending on the discretion of the attending physician, they will be prescribed Progut for treatment duration lasting 3 to 12 weeks. Safety of Progut under normal clinical use will be assessed at the end of this period. Perception of effectiveness, and tolerability of treatment will be assessed on Day 8-15 using a phone interview. On Visit 2 (any time between Day 22 to 85, depending on duration of treatment given and schedule of their follow-up visit arranged by the attending physician), the patient will be evaluated for symptomatic improvement, perception of effectiveness, tolerability and satisfaction with treatment, following which he/she will formally exit the study.