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Tribulus Terrestris

Tribulus terrestris is a low, spiny-fruited plant of warm regions across Europe, Asia, Africa and Australia. Known in Ayurveda as Gokshura (Gokhru) and in Chinese medicine as Bai Ji Li, its fruit and root have been used for centuries as a diuretic, tonic and aphrodisiac.

Blood SugarFertility/infertilityHeart

Names in Different Languages

EnglishTribulus Terrestris
Urduگوکھرو
Hindiगोखरू
Farsiخارخاسک
UnaniGokhru
FrenchTribule terrestre
GermanErd-Burzeldorn

Traditional Uses

In Ayurveda, gokshura fruit and root have traditionally been used as a Vrsya (aphrodisiac) for men, a Mutrala (diuretic) for painful or difficult urination, and a tonic for strength; in Traditional Chinese Medicine the fruit is used for headache, dizziness, red eyes and skin itching.

Modern Research

Tribulus is heavily marketed as a testosterone booster, but the evidence does not support that claim: a 2025 systematic review in Nutrients (10 trials, 483 men) found 8 of 10 studies showed no significant change in androgen levels, and a 2026 meta-analysis found no significant difference in total testosterone versus placebo. The more defensible signal is on sexual-function questionnaires, with modest gains and wide confidence intervals. The European Medicines Agency (EMA) concluded in 2024 that safety and efficacy data were insufficient to establish a European monograph, so expectations should stay modest.

Uses

  • Libido and sexual-function support
  • Male vitality tonic in Ayurvedic practice
  • Urinary and diuretic support (traditional)
  • Blood sugar and blood pressure support (traditional and preliminary)

Benefits of Use

  • Sexual function support: randomised trials reported improved erectile-function and sexual-function scores, including Kamenov et al. (2017) in 180 men over 12 weeks
  • Libido support: trials in men and women with sexual dysfunction reported improved desire and satisfaction scores
  • Blood pressure support: preliminary evidence suggests a mild blood-pressure-lowering effect
  • Blood sugar support: traditional use and small studies suggest a possible blood-sugar-lowering effect, though evidence is limited

Safe Dose & Overdose (mg/g)

Raw Herb Form

Safe: 3-6 g per day of dried fruit powder, per the Ayurvedic Pharmacopoeia of India as cited in the Health Canada monograph; traditional Chinese decoction uses 6-10 g of dried fruit per day.

Overdose: Not established

Extract Form

Safe: 750-1,500 mg per day of standardised extract, the range used in most sexual-health trials; Kamenov et al. (2017) used 750 mg per day for 12 weeks.

Overdose: Not established

Side Effects

  • Mild stomach upset, nausea or acid reflux, especially at high doses
  • Trouble sleeping or restlessness in some users
  • Rare reports of irregular periods, breast enlargement (gynaecomastia) or hair loss
  • Isolated severe liver or kidney injury reports involving tribulus-containing products, though direct causality is uncertain
  • Contraindicated in pregnancy and breastfeeding and in children under 16; caution with gallstones

Interactions

  • Diabetes medicines: may lower blood sugar and add to their effect
  • Blood pressure medicines (antihypertensives): may lower blood pressure further
  • Blood thinners such as clopidogrel: potential interaction reported; discuss with a clinician
  • Statins and other CYP3A4-metabolised drugs: tribulus is a moderate CYP3A4 inhibitor; one case report describes muscle breakdown (rhabdomyolysis) with a statin

Sources

Disclaimer

General information only — not medical advice. Consult a qualified healthcare professional before use.

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