Tribulus Terrestris Powdered Extract Appearance: Light brown powder, fragrant, bitter Functions: Puncture vine caltrop fruit ,a kind of creepers with branches and mild hairs produced in yields, roadsides and weeds besides rivers all over China. Tribuloside extracted from the fruits can raise the blood testosterone, without any stimulin and improve the overall competitive ability without adverse effect. Besides, it contains various kinds of alkaloids and saponins, which can decrease blood pressure and lipids. The peroxides it contains can resist against aging and beautify the complexion. If you take it for a long time, it may remove the spots from your face and freshen the complexion.