Tribulus Terrestris
What is it?
Tribulus Terrestris is a medicinal plant originating from tropical and subtropical regions of Europe, Asia and Africa. It is widely marketed as a testosterone and libido stimulant, based on the premise that its steroidal saponins (especially protodioscin) would increase LH (luteinizing hormone) levels, which in turn would stimulate testosterone production. It is one of the world's best-selling supplements for male sports performance.
Main Benefits
- May improve libido in men and women
- Possible sexual function support
- Mild adaptogenic effect
- May have mild diuretic action
- Traditional use in Ayurvedic and Chinese medicine for vitality
Who it's for
- •Men with complaints of reduced libido
- •People interested in sexual function support
- •Those seeking natural alternatives for vitality
- •Use within cultural and traditional context
Common Dose
200mg to 450mg of standardized extract (40–60% saponins) per day, split into 2 to 3 doses with meals.
How to Choose
Tribulus Terrestris is one of the most overrated supplements for testosterone and sports performance. Scientific evidence in healthy humans does not support testosterone increase — well-controlled studies show no significant difference in testosterone levels compared to placebo. The most consistent benefits appear for libido and sexual function, not testosterone or sports performance. If the goal is to increase testosterone, Ashwagandha (KSM-66) and Zinc have far superior evidence. Tribulus can be used as libido support, but with realistic expectations.
What the Science Says
The premise that Tribulus increases testosterone via LH originated from animal studies and men with hypogonadism. In healthy men with normal testosterone, controlled studies do not confirm this effect. A 2019 meta-analysis (Journal of Ethnopharmacology) concluded that Tribulus does not significantly increase testosterone in healthy men. The most robust effects appear for libido and sexual satisfaction, possibly through a mechanism independent of testosterone — perhaps via dopamine or nitric oxide.
Possible Side Effects
Generally well tolerated. May cause mild gastrointestinal discomfort. At very high doses, rare reports of liver and kidney toxicity. Avoid during pregnancy. May interact with diabetes and blood pressure medications.
Final Summary
Tribulus Terrestris does not increase testosterone in healthy men — the scientific evidence is clear on this point. It may have modest benefit for libido and sexual function through an independent mechanism. If the goal is testosterone, prefer Ashwagandha KSM-66 and Zinc. Use Tribulus with realistic expectations focused on sexual function, not anabolism.