Hormone Support

Tribulus Terrestris

Also known as: Puncture vine, Goat's head, Tribulus, Tribulus terrestris Extract (Fruit, 20% Protodioscin)

Evidence

Tribulus terrestris is a traditional plant extract standardized to protodioscin, a steroidal saponin claimed to support sexual function and athletic performance. Evidence for these effects remains limited and inconsistent, with most studies showing modest benefits at best.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

Libido
Sexual function
Traditional vitality
Sexual function and libido
Athletic performance and muscle building
Testosterone support
Athletic performance
Testosterone support (claimed)

How it works

May enhance libido
Traditional aphrodisiac
Does NOT significantly raise testosterone despite marketing
May support nitric oxide

Dosage

Typical range: 250-750mg standardized extract daily
Timing: With meals
With food: Yes
Duration: 8-12 weeks cycles
Special populations: Those seeking libido support

Forms

Standardized extract
Powder
Capsule· 70/100
Extract· 70/100
Extract (standardized to 20% Protodioscin)· 70/100

Safety

Common side effects

GI upset
Sleep issues (some)

Contraindications

Hormone-sensitive conditions (caution)

Evidence notes

Better evidence for libido than testosterone increase

Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.