Tribulus Terrestris

Name: Tribulus Terrestris

Classification: Vasodilator, Androgen Precursor

One rodent study found Tribulus to be helpful in male sexual enhancement. Intracavernous pressure (ICP) were studied in both normal and castrated rats to further understand the role of tribulus as a male enhancement vehicle. ICP refers to blood flow into the corpus cavernosa of the penis. Adult rats were divided into groups of 8 each that included distilled water treated (normal and castrated), testosterone treated (normal and castrated, 10 mg/kg body weight) and tribulus treated (castrated, 5 mg/kg body weight). Decreases in body weight, prostate weight and ICP were observed among the castrated groups of rats compared to the intact group. Compared to the castrated control, treatment of castrated rats (with either testosterone or tribulus extract) showed increase in prostate weight and ICP. There was also a mild to moderate improvement in sexual behavior as evidenced by an increase in mounting frequency.