Maximum male support. 750 mg Tribulus Terrestris. Testron SX was designed for the active male. The plant extracts in Testron SX have been used for centuries by men to enhance virility and give hormonal support. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.) Testron SX keeps men feeling their best. Testron SX is used by athletes and fitness enthusiasts worldwide; Contains Tribulus Terrestris, Nettle root, Oatstraw and Muira Puama – key components for male health; Contains 750 mg of standardized Tribulus Terrestris per serving.