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SupplementScience

Benefits of Tribulus Terrestris

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Evidence-Based Benefits

  • Libido — some studies report subjective improvements in sexual desire, possibly through androgen receptor sensitivity or nitric oxide pathways rather than testosterone elevation (Santos et al., 2014)
  • Traditional medicine — used for centuries in Ayurveda (Gokshura) for urinary tract health, kidney stones, and vitality; some preliminary evidence for diuretic effects
  • Animal studies misleading — while tribulus raises androgens in rats and rabbits, this does not translate to humans due to different enzymatic pathways (Gauthaman & Ganesan, 2008)
  • No ergogenic benefit — Rogerson et al. (2007) found tribulus supplementation had no effect on body composition, strength, or urinary testosterone-to-epitestosterone ratio in rugby players

What the Research Says

Tribulus terrestris is a cautionary tale in supplement science. Heavily marketed based on animal studies and Eastern European sports doping lore, it was one of the best-selling "testosterone boosters" for decades. However, well-controlled human studies consistently fail to show any testosterone elevation. Neychev & Mitev (2005) found no change in testosterone, LH, or FSH in young men. Rogerson et al. (2007) found no effect on body composition or strength in trained athletes. The small libido benefits that some users report likely involve non-hormonal mechanisms. For anyone seeking evidence-based testosterone optimization, focus on sleep, resistance training, body composition, vitamin D, and zinc status.

References

  1. (). The aphrodisiac herb Tribulus terrestris does not influence the androgen production in young men. Journal of Ethnopharmacology. DOI
  2. (). The effect of five weeks of Tribulus terrestris supplementation on muscle strength and body composition during preseason training in elite rugby league players. Journal of Strength and Conditioning Research. DOI
  3. (). Does the association of Tribulus terrestris and Cornus officinalis improve sexual function and seminal quality?. Actas Urologicas Espanolas. DOI