Genetic code F8 Tribulus Terrestris is a natural source supplement used for supporting male vitality and lean muscle development to help you reach your fitness goals.* Tribulus can also help support athletic performance levels. people use tribulus for gonorrhea, liver disease (hepatitis), inflammation, joint pain (rheumatism), leprosy, coughs, headache, dizziness (vertigo), chronic fatigue syndrome (CFS), and enhancing athletic performance. It is also used for stimulating appetite and as an astringent, tonic, and mood enhancer.