Vitrix offers the strongest and most effective form of Tribulus Terrestris on the market today, a whopping 1000 mg of liquid German Tribulus Terrestris! This yields 80% of active saponins and 20% protodioscin, unmatched by any other product in terms of purity and potency. Now you add 500 mg of a totally natural, one-of-a-kind testosterone stimulating and estrogen blocking phyto-nutrient blend called NTS-5, which synergistically combines the strongest sex drive boosting herbals. All of this comes in a unique liquid-capsule delivery system providing the highest and fastest absorption rates possible. If you look at these characteristics, you know that Vitrix is the most effective natural product in its category.