The thing is.. tribulus doesnt work.. at least the extract most of us see in products, so most think.. ah its the amount of steroidal saponins.. but wrong again, its actualy the amount of protodioscin from the fruit of the plant that is the actual active that does stimulate lh, It does work.. if anyone here has used Protodioscin at 50 percent or above then you will have felt it work.. bigger pumps, aggression, weight gain. As a natural competitor im limited to what i can use so ive taken a long time finding what does jack all and what does actualy work.