Dragon Herbs Tribulus is a natural product, isolated from above ground portion of the plant Tribulus terrestris, containing mainly saponins of the furostanol type, with a predominating quantity of protodioscine. It has a stimulating effect on spermatogenesis, ovogenesis and libido. Tribulus can have a powerful influence on the building of lean muscle mass and on the libido of both men and women. Furthermore, it has been shown to positively influence female hormonal functions, thus benefiting women who suffer from distressful symptoms associated with pre-menstrual syndrome (PMS) and menopausal syndrome.