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Types of Tribulus Terrestris: Forms & Bioavailability

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Forms Comparison

FormBioavailabilityBest For
Standardized Fruit Extract (45-60% saponins)ModerateSexual function support — most clinical trials use this standardization level
Bulgarian Tribulus Extract (high protodioscin)Moderate-HighPremium form — Bulgarian-sourced tribulus is reputed to have the highest protodioscin content
Root and Fruit Combination ExtractModerateComprehensive profile — combines the saponin-rich fruit with root compounds used in Ayurvedic tradition

Standardized Fruit Extract (45-60% saponins)

Bioavailability: Moderate. Best for: Sexual function support — most clinical trials use this standardization level.

Bulgarian Tribulus Extract (high protodioscin)

Bioavailability: Moderate-High. Best for: Premium form — Bulgarian-sourced tribulus is reputed to have the highest protodioscin content.

Root and Fruit Combination Extract

Bioavailability: Moderate. Best for: Comprehensive profile — combines the saponin-rich fruit with root compounds used in Ayurvedic tradition.

Full Tribulus Terrestris Guide

References

  1. (). Evaluation of the efficacy and safety of Tribulus terrestris in male sexual dysfunction — a prospective, randomized, double-blind, placebo-controlled clinical trial. Maturitas. DOI
  2. (). A systematic review on the herbal extract Tribulus terrestris and the roots of its putative aphrodisiac and performance enhancing effect. Journal of Dietary Supplements. DOI
  3. (). 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