Sports Food Tribulus Terrestris - 95% Saponins, 80% Protodioscin - 1000 mg x 90 Capsules Bulgarian Extract - Natural Testosterone & Libido Booster for Men - High Strength Organic Herbal Extract --- The manufacturer claims 80% content of furastanol saponins (or ? 800 mg of Protodioscin/capsule) determined as Protodioscin. --- The testing method u...