THE ESTROGEN PROBLEM DIM or diindolylmethane is a unique compound found in small amounts in cruciferous vegetables like broccoli kale and cauliflower. What makes it special is its widespread traditional use to decrease estrogen levels in men. At concentrated amounts DIM is thought to work by inhibiting the enzyme responsible for converting testosterone into estrogen in the body. Throughout history men have wanted to exhibit lower levels of estrogen relative to testosterone in an effort to maximize their masculinity. With 300mg of high quality DIM in every capsule along with BioPerine® black pepper fruit extract and selenium you can rest assured that you are getting a powerful dose and quick absorption for optimal performance. FUNDAMENTAL STACKING All of the Force Factor® Fundamentals formulas were designed to stack together as well as with any other supplement in our full line of premium performance nutrition products.