Testrol Gold ES is the specialized male testosterone booster from TAG. This advanced formula naturally supports male performance, endurance, strength and testosterone, with the added benefit of hormone regulators. It contains DIM, short for 3,3'-diindolylmethane, a compound of indol-3-carbinol (I3C), a phytonutrient that supports estrogen balance in men. DIM supports the activity of specific enzymes that support normal estrogen ratios that optimize testosterone levels.