Tribulus Terrestris, Androgen and Libido·Exercise Multi-Target in 2025 Trial
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Tribulus Terrestris, Androgen and Libido·Exercise Multi-Target in 2025 Trial

By Sophie · · Phytotherapy Research 2025
KO | EN

Tribulus terrestris standardized extract at 750mg/day for 12 weeks significantly improved sexual function score in 80 menopausal and low-libido patients in a 2025 clinical trial. However, marketing-promoted “testosterone booster” effect is weak in clinical data.

The Phytotherapy Research 2025 RCT enrolled 80 menopausal women (45~58 years) + low-libido patients for 12 weeks of tribulus standardized extract 750mg/day (40%+ protodioscin). Sexual Function Index (FSFI) -38%, vaginal lubrication +32%, satisfaction +35%, partial androgen marker improvement. Direct blood testosterone elevation subtle.

What is Tribulus

Tribulus (Tribulus terrestris) is a Zygophyllaceae annual. English “Tribulus, Puncture Vine, Goat’s Head”. Native to the Mediterranean, Africa, Asia. Indian Ayurveda + Chinese medicine + Eastern European traditional medicine core.

Active compound matrix:

  • Protodioscin: core saponin, standardization marker
  • Dioscin: diosgenin cousin, subtle hormone modulation
  • Tribuloside: secondary
  • Harmane, harmine: β-carboline alkaloids, neural activity

Multi-Target Mechanisms

1. Sexual Function Support (Both Sexes):

  • Pelvic mucosa/blood flow support
  • Partial NO synthesis
  • Dopamine·serotonin modulation (libido)
  • Both menopausal women + men clinical

2. Androgen Modulation (Limited):

  • Protodioscin partial LH (luteinizing hormone) → androgen synthesis
  • Direct blood testosterone elevation weak in clinical
  • “Testosterone booster” marketing exaggerated

3. Antioxidant/Anti-inflammatory:

  • Saponin partial NF-κB inhibition
  • Chronic inflammation support

4. Subtle Glucose/LDL:

  • Saponin bile acid binding → subtle LDL ↓
  • Subtle insulin sensitivity

5. Mood/Neural:

  • β-carboline partial monoamine oxidase (MAO) inhibition
  • Mild antidepressant·anxiolytic

”Testosterone Booster” Myth vs Clinical

Marketing claims: testosterone +30~50%, strength·exercise capacity explosion

Actual clinical data:

  • Meta-analysis 2024 (12 RCTs): blood testosterone change subtle or no different from placebo
  • Direct exercise capacity effect: no consistent data
  • Sexual function/satisfaction: meaningful effect
  • Menopausal women androgen support: meaningful effect

Conclusion: weak as “testosterone booster” for young men. Meaningful for menopausal/sexual function targets. For exercise capacity, prioritize beta-alanine, creatine.

Clinical Data

  • Phytotherapy Research 2025 RCT 80 subjects 12 weeks: sexual function -38%
  • Cochrane 2023: weak direct testosterone elevation
  • Trials 2024: menopausal + postmenopausal women androgen support
  • Sports trials: weak direct exercise capacity data

Cautions

  • Pregnancy/lactation: avoid (uterine stimulation possible)
  • Hormonal medications (contraceptives, HRT, testosterone): clinical evaluation
  • Prostate enlargement: androgen effect possible, evaluate
  • Estrogen-sensitive cancers: clinical evaluation
  • Glycemic medications: subtle synergy
  • Liver disease: saponin liver enzyme effects possible
  • MAO inhibitors + antidepressants: β-carboline synergy concern
  • 8~12 week evaluation: try alternatives if no response

Synergy Matrix

  • Fenugreek (L23): androgen matrix (fenugreek stronger)
  • L-Citrulline + tribulus: sexual function (NO + neural)
  • Maca: sexual function + vitality matrix
  • Beta-alanine + tribulus: prioritize beta-alanine for exercise

Consumer Message

Sexual function and menopausal androgen support carry meaningful tribulus effect. “Testosterone booster” marketing exaggerated — weak in young exercise capacity. Beta-alanine, creatine, HMB first for exercise. Fenugreek, maca matrix for menopause + sexual function. Avoid in pregnancy/lactation, evaluate hormonal medications/prostate. Spring 2026 hormone/sexual function matrix. Distinguish marketing vs clinical.