Tribulus Terrestris Extract 1000mg - 95% Steroidal Saponins, 80% Protodioscin. Premium Testosterone Booster Supplement Capsules for Optimum Performance. Now with Full 90 Day Supply. Promotes natural testosterone production for faster muscle growth and repair* Increase sex drive and libido* Higher energy and stamina throughout the day* Highest Potency Tribulus Terrestris Extract on Amazon - 95% potency compared to 45% potency per capsule of the other brands Premium Quality Supplements Manufactured and Tested in the USA in FDA inspected, GMP-certified Facilities and includes our 100% Money Back Guarantee. BUY 2 OR MORE AND GET FREE SHIPPING.