The Effect of Testosterone Replacement on Sexual Function in the Elderly: A Systematic Review and Meta-Analysis.

Although our overall effect size (that is, sexual function effect of TRT) did not show a significant improvement, the direction of improvement in erection and motivation was clearly shown. The injection formulation resulted in a significant sexual function improvement. Since only a few RCTs were included in the analysis, more well-designed prospective studies are needed to have a definite conclusion.