Tribulus terrestris
Extract of the plant Tribulus terrestris, sold as a means of raising testosterone.
What the research shows
No sound research in humans.
Qureshi (2014) pooled eleven studies too different to combine: the testosterone rise came mainly from animal experiments and in humans only from combination products. Vilar Neto (2025) reviewed ten studies with 483 men, half of low quality, and found only within-group shifts in hypogonadism. Morgado (2024) placed it among the boosters that leave total testosterone unchanged.
Who it makes sense for: Nobody who wants to raise testosterone; for erectile problems there are treatments that do work.
How we weigh evidenceClinical dosage
Scientific sources
The clinical dosages on this page are based on peer-reviewed research.
- A systematic review on the herbal extract Tribulus terrestris and the roots of its putative aphrodisiac and performance enhancing effect.Qureshi A et al. (2014)
- Effects of Tribulus (Tribulus terrestris L.) Supplementation on Erectile Dysfunction and Testosterone Levels in Men-A Systematic Review of Clinical Trials.Vilar Neto JO et al. (2025)
- Do "testosterone boosters" really increase serum total testosterone? A systematic review.Morgado A et al. (2024)
We keep the dosages and values on this page as accurate as possible based on selected studies. New research may change these values. Nothing on this page is medical advice. If you have any doubts, always consult a doctor.