Tribulus Saponins [patched] 〈360p〉

No increase in muscle mass, strength, or endurance beyond placebo in controlled trials (Antonio et al., 2000; Rogerson et al., 2007).

—particularly protodioscin—are the signature compounds of Tribulus terrestris . Despite widespread marketing as a testosterone booster and anabolic aid, high-quality human trials consistently show no effect on testosterone, LH, or athletic performance in healthy or hypogonadal men. There is weak, inconsistent evidence for modest improvements in libido and erectile function, possibly via nitric oxide or central neurotransmitter pathways. tribulus saponins