Tribulus terrestris is a flowering plant that is a popular ingredient in dietary supplements. It is believed to be beneficial for improving athletic performance and enhancing sexual function. The root, stem, and fruit of the plant contain compounds that may relax the arteries of the heart, increase testosterone and other male hormones, and reduce blood pressure by inhibiting angiotensin-converting enzymes. Tribulus terrestris supplements have not been reported to cause side effects.
(Click Tribulus Terrestris to find out what else this supplement is used for, to learn about its other effects, and for general warnings and precautions. You can also click any of the links in the box to the right for specific information.)