Tribulus terrestris is a fruit-producing Mediterranean plant that's covered with spines. It is also called puncture vine.
People use the fruit, leaf, or root of the tribulus plant as medicine. Some formulations also include other ingredients.
Over the years, people have taken tribulus in an attempt to enhance athletic performance, body building, and for a wide range of health issues that may include heart and circulatory conditions and sexual issues.
Of the more than 70 compounds found in Tribulus terrestris, the most common include steroidal saponins and flavonoids, which are contained in the root and the fruit of the plant and appear to be largely responsible for its potential antioxidant, anti-inflammatory, antibacterial, and anti-aging properties.