Sci-Fit's multi-action 3-Test Stack has been formulated with only pharmaceutical grade ingredients via a DHB enhanced delivery system for exceptional absorption. 3-Test Stack enhanced with Eurycoma, is designed to assist the body in supporting healthy testosterone levels as well as to decrease levels of "bound" testosterone. Tribulus Terrestris is a natural testerone enhancer perfect for giving you the test boost your looking for without the side effects. And ZMA, studies show that anabolic hormone and muscle strength increases can be induced in already strength-trained athletes by using this novel zinc-magnesium preparation.