Puritan'S Pride Men's Performance

Tribulus appears to enhance male fertility through its ability to increase sperm count, viability, and libido; however, the published material is unclear, reporting older studies that were poorly designed and results that are not sufficiently definitive. A number of older papers supporting the extract product Tribestan highlight significant efficacy; however, owing to poor study design and lack of reliability, it is difficult to rely on these findings, which include increased ejaculate volume, sperm concentration, and motile sperm 243 and improved conception rates. 244 More recent studies have also produced conflicting results. In a recent prospective, randomized, double-blind, placebo-controlled trial, Tribestan (500 mg three times per day for 12 weeks) was found to successfully improve sexual function in men with mild to moderate erectile dysfunction ( n = 180). 245 These results are in conflict with a previous study in which 400 mg of Tribulus treatment (400 mg twice per day for 30 days) was found to be no better than placebo at improving erectile dysfunction, possibly due to suboptimal dosing and/or too short a study period.