Discover the wellness-boosting effects of Swanson Tribulus Terrestris Extract. A flowering plant that can be found in tropical regions throughout various parts of the world, including Europe, Africa, Southern Asia and Australia, Tribulus terrestris boasts multiple positive health benefits. Our extract features Bulgarian Tribulus terrestris, which supports the libido, protects organ function and promotes testosterone production. Tribulus terrestris extract is used widely amongst athletes worldwide, many of whom believe that it aids in building both strength and lean muscle mass. Our potent standardized extract features guaranteed concentrations (45%) of steroidal saponins.