What Does Tribulus Complex Do?Jarrow Formulas Tribulus Complex is a blend of standardized Ayurvedic extracts used by athletes to enhance energy and post-exercise recuperation. Tribulus, also known as puncture vine, contains 45% steroidal saponins. Sensoril Ashwagandha and Rhodiola extracts are adaptogens that support endurance. Andrograph extract contains andrographolides, which are substances that support immune function and counter physical stress. Green Tea Extract (50% polyphenols) is added to support the strength of capillaries and other blood vessels.