• S A Kaplan, H L Holtgrewe, R Bruskewitz, B Saltzman, D Mobley, P Narayan, R H Lund, S Weiner, G Wells, T J Cook, A Meehan, J Waldstreicher, and Proscar Long-Term Efficacy and Safety Study Group.
• Columbia Presbyterian Medical Center, New York, New York 10032, USA.
• Urology. 2001 Jun 1; 57 (6): 1073-7.

ObjectivesTo compare the efficacy and safety of finasteride 5 mg in older (65 years old or older) versus younger (45 to younger than 65 years old) men with benign prostatic hyperplasia (BPH).MethodsThe Proscar Long-Term Efficacy and Safety Study (PLESS) was a 4-year, randomized, double-blind, placebo-controlled trial assessing the efficacy and safety of finasteride 5 mg in 3040 men 45 to 78 years old with symptomatic BPH, enlarged prostates, and no evidence of prostate cancer. The endpoints included urinary symptoms, prostate volume, occurrence of acute urinary retention and/or BPH-related surgery, and safety.ResultsIn both age cohorts, finasteride treatment led to a 51% reduction (P <0.001) in the relative risk for acute urinary retention and/or BPH-related surgery, a significant (P <0.001) and durable improvement in symptom score, and a significant (P <0.001) and sustained reduction in prostate volume. Within each age cohort, no significant differences were found between the placebo and finasteride-treated patients in the incidence of cardiovascular adverse events. Significant differences were evident between the placebo and finasteride groups in the incidence of the typical, known, drug-related adverse events, but no specific differences were associated with age. No drug interactions of clinical importance were observed in the finasteride-treated patients.ConclusionsThe present analysis from PLESS demonstrates that in both older (65 years old or older) and younger men with symptomatic BPH and enlarged prostates, finasteride is highly effective in improving symptoms and reducing prostate volume in many men and in reducing the risk of acute urinary retention and BPH-related surgery. In addition, the safety profile of finasteride in both older and younger men is similar and no drug interactions of clinical importance were observed.

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