Tribulus (Tribulus terrestris) is a small, flowering plant also known as puncture vine and goat's head. The plant yields a fruit that is covered with spines. The fruit, leaf, and root are used as medicine to treat a number of conditions, People use the fruit, leaf, and root as medicine for conditions such as chest pain, eczema, enlarged prostate, sexual disorders, infertility, and many others, most notably sexual dysfunction.
 

1. Athletic Performance: Dietary supplements containing tribulus are often marketed for their potential to increase  levels and, in turn, build muscle mass and boost strength.

2. Sexual Dysfunction: Tribulus may help treat erectile dysfunction, according to a study published in Maturitas in 2017. In testing the effects of 12 weeks of a tribulus extract on men with mild or moderate erectile dysfunction, researchers found that those who took tribulus had a significant improvement in sexual function (including erectile dysfunction). For the study, 40 women with diminished libido were treated with tribulus or a placebo. At the study's end, those who received tribulus had increased levels and experienced a significant improvement in factors such as desire, arousal, pain, and satisfaction.

3. Diabetes: Tribulus may fight diabetes, suggests a small study published in the Journal of Evidence-Based Complementary and Alternative Medicine in 2016. In the study, women with type 2 diabetes received either three months of tribulus treatment or a placebo. Blood glucose, total cholesterol, and LDL cholesterol were significantly reduced compared with the placebo. There was no significant effect observed in triglyceride and HDL cholesterol levels.