Main Function: 1.Tribulus Terresteris is a natural aid to help impotence, low libido, and male infertility. Clinically. 2.It has proven effect in enhancing energy and vitality, and helps to build muscle and strength. 3.Tribulus Extract increases testosterone levels and promotes muscle mass. 4.It may also help to inhibit the formation of kidney stones. Specification: Aspect : Fine Powder ,Hygroscopicity : Visual Color : Brownish yellow& Brownish green Powder : Visual Odor : Characteristic : Organoleptic Taste : Bitter : Organoleptic Staphylococcus aureus : Negative : CP2010 E.Coli : Negative : CP2010 Salmonella : Negative : CP2010. 1kg/foil bag, 25kg/Drum,or as your requirements