ProBuilt Nutrition® TESTRO-GAIN™ Multi-faceted anabolic stack combines the most potent testosterone stimulators known. Helps to increase natural free testosterone levels with Chrysin, tribulus, Indole-3-carb, Saw Palmetto, Lipoic Acid and more. The ingredients in TESTRO-GAIN™ all work towards achieving the same common goal – increased Testosterone. Each component of TESTRO-GAIN™ uses different mechanisms and channels to achieve this outcome. The benefits of boosting Testosterone include achieving explosive gains in lean muscle mass and strength, enhancing endurance, decreasing body fat and boosting libido. TESTRO-GAIN™ is the most effective testosterone booster on the market today.