Aged Drug Therapy Combination Erectile Dysfunction/*drug therapy Humans Male Middle Aged Phosphodiesterase Inhibitors Prostatic Hyperplasia/*drug therapy Tadalafil Tamsulosin Treatment Outcome Vasodilator Agents *benign prostatic hyperplasia *erectile dysfunction *meta-analysis *tadalafil *tamsulosin conflicts of interest with respect to the research authorship and/or publication of this article.

5-alpha Reductase Inhibitors/pharmacology Blood Loss Surgical/*prevention & control Blood Transfusion Dutasteride/*pharmacology Hemoglobins/analysis Humans Male Microcirculation Prospective Studies Prostate Prostatic Hyperplasia Randomized Controlled Trials as Topic Retrospective Studies *Transurethral Resection of Prostate Treatment Outcome Vascular Endothelial Growth Factor A/metabolism Benign prostatic hyperplasia Dutasteride Intraoperative blood loss Meta-analysis Transurethral resection of the prostate