
Tribulus terrestris is a plant also called puncturevine, caltrop, gokhru or gokshura. Products use its fruit, leaves and stems, or root. 6
It has long been used to boost sex drive. In 2024, Europe’s herbal committee refused to write a monograph for it, finding that neither established nor traditional use was shown. 7
Labels claim it raises testosterone, builds muscle and boosts performance and sex drive. Some also claim it helps blood sugar, blood pressure and kidney stones.
We rate each marketing claim with a modified version of GRADE, the system medical researchers use to say how sure we can be (i.e., high, moderate, low or very low), and check each trial with the Cochrane risk-of-bias tool, which asks whether a study’s design could skew its results. For tribulus we appraised 39 records, published mostly from October 2022 to October 2026, plus older trials. We also checked 10 regulators and safety databases, and found no Cochrane review of tribulus.
Erectile Function GRADE: Low
Pooling three single-ingredient trials (272 men) gave a 3.88-point gain on the IIEF-5 erectile function score, just under our 4-point bar. 13 The largest trial, 180 men on 1,500 mg a day for 12 weeks, found 2.70 points. 20
Bias check: Half the pooled trials had a high risk of bias, and the largest trial had a co-author from the maker. Another pooled analysis found no clear effect. 10
Women’s Libido and Menopause GRADE: Very Low
In a trial of 60 women after menopause, 750 mg a day for 90 days raised desire scores (10.2 vs 7.6). A 45-woman trial found gains only within the tribulus group. A review of 5 trials could not pool them. 21 22 23
Bias check: All three trials are small and older, and the review rated its own evidence very low.
Male Libido GRADE: Very Low
No trial measured stamina. A 2025 review of 10 studies (483 men) found erectile function improved in 3 of 5 trials, but desire results were not pulled out. 8
Bias check: Most studies were small, and half were rated low quality.
| Claim | Claim Verdict | Research Confidence | Supporting Evidence | Safety Risk | Product Quality | FactStack™ Rating |
|---|---|---|---|---|---|---|
| Erectile Function | Promising | Low | Promising | Real Concern | Inconsistent | Warning |
| Women’s Libido and Menopause | Promising | Very Low | Promising | Real Concern | Inconsistent | Warning |
| Male Libido | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Fertility | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Athletic Performance | TBD | Low | TBD | Real Concern | Inconsistent | Warning |
| Energy | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Antioxidant | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Blood Sugar and Cholesterol | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Blood Pressure and Heart | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Kidney Stones and Urinary Health | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Disease Treatment | TBD | Very Low | TBD | Real Concern | Inconsistent | Warning |
| Testosterone | Doubtful | Low | Doubtful | Real Concern | Inconsistent | Warning |
| Muscle and Strength | Doubtful | Low | Doubtful | Real Concern | Inconsistent | Warning |
| “Boosts testosterone.” | In a 2025 review, 8 of 10 studies found no change. Two pooled analyses found no difference from placebo. 8 9 10 |
| “Builds muscle and strength.” | A US military safety review found no strong evidence. A 6-week trial in trained men found no gain in performance. 11 12 |
| “Clinically proven for erectile function.” | The best pooled gain falls just short of our bar, and another pooled analysis found no clear effect. 13 10 |
| “Natural, so side effects are mild.” | A 31-year-old woman who drank tribulus tea for 2 to 3 months died of liver failure; a case report cannot prove cause. NIH’s LiverTox urges caution with liver disease. 14 6 |
| “Standardized and pure.” | A lab test of 27 products found undeclared green tea in 3 and citrus compounds in 3. 15 |
| “Works in 1 to 2 weeks.” | Trials ran 4 weeks to 4 months. No trial shows results that fast. 8 |
| Who | No marketed health benefit is established for any group. |
| Dose | No authority dose. EMA refused a monograph in 2024 because safety data were lacking. 7 |
| Ceiling | None established. |
| Duration | No more than 3 months. Stop for jaundice, dark urine, severe muscle pain, reduced urine, palpitations or fainting, rash after sun, or prolonged painful arousal. |
| Form | A single-ingredient extract; 3 of 27 products tested held undeclared green tea. 15 |
| Ask First | Liver or kidney disease; pregnancy or breastfeeding; clopidogrel, diuretics, blood-pressure or diabetes drugs, statins; prostate cancer; drug-tested athletes. |
| Pick a plan | Trials used 400 to 750 mg a day for 1 to 3 months. The lowest dose that helped erectile function was 750 mg a day. 8 13 |
| Time of day | Not reported. |
| With food | Not reported. |
| What to expect | Where erectile function improved, it took 4 to 12 weeks. Do not expect higher testosterone. Above 1,000 mg a day, people reported poor sleep, fatigue and a faster heart rate. 13 11 |
| How to take | Choose a single-ingredient extract, not a “test booster” blend, and stop at 3 months. |
Not reported. No supplement has been shown to add to tribulus’s effect.
A doctor visit first. Have erectile function problems checked by a clinician before you try it.
Low blood pressure or liver problems. Health Canada says do not use tribulus if you have low blood pressure or liver deficiency. 1
Pregnancy. Health Canada says to ask a practitioner first if you are pregnant. Effects in pregnancy and breastfeeding are unknown. 1
Statins, clopidogrel, water pills, blood-pressure or diabetes drugs. Ask your doctor first.
| Date | Maker / Brand | Product | Action | Src |
|---|---|---|---|---|
| May 2026 | Sellers in Sweden and Denmark (products from Poland, Hungary and elsewhere) | Tribulus food supplements, incl. “Tribusteron 90” | Six EU RASFF actions by Sweden and Denmark, Jul 2025 to May 2026: sales bans, withdrawals and removal of online offers. | 2 |
| Nov 2024 | European Medicines Agency (herbal committee) | Tribulus terrestris herb | EU herbal monograph refused: neither well-established nor traditional use shown; safety data lacking. | 7 |
| Oct 2024 | Samasta Foods Pvt. Ltd. (India) | Organic Gokhru (Gokshura) Powder | FDA Import Alert 99-19 (Salmonella) lists the firm’s gokhru powder. Detention at the border, not a recall. | 16 |
We compare products side-by-side not just on price, but on whether NSF lists the product as NSF/ANSI 173 Contents Certified (an independent lab confirms the label matches the contents), whether it is NSF Certified for Sport, whether USP lists it as USP Verified, and whether the seller says it is manufactured in the USA. We leave out a brand’s products for this supplement when, in the last 36 months, the FDA took action against that brand over this supplement (a Class I or II recall, a warning letter, an import alert or an advisory letter). We also leave out any brand with an FDA Class II recall or warning letter on any product. We also leave out any product named in a California Prop 65 notice or a non-US recall, along with that brand’s products of the same ingredient and form. Brands with other actions stay listed and are marked in the Recall Screen column. Our goal remains to provide you, the Consumer, with the information and data necessary to make an informed purchasing decision. Prices reflected below are static and subject to change.
Ratings above describe the ingredient’s research, not any product listed below.
| # | Retailer | Product | Price | NSF 173 | NSF Sport | USP | Mfg. in USA (per seller) | Recall Screen | Affiliate link |
|---|---|---|---|---|---|---|---|---|---|
| 1 | iHerb | Force Factor, Fundamentals, Tribulus Terrestris, 60 Capsules | $9.26 | ✓ | ✓* | View on iHerb ↗ | |||
| 2 | iHerb | EVLution Nutrition, 100% Tribulus, 650 mg, 60 Veggie Capsules | $9.99 | ✓ | ✓ | View on iHerb ↗ | |||
| 3 | iHerb | California Gold Nutrition, Sport, Tribulus, 1,000 mg, 60 Tablets | $10.54 | ✓ | ✓* | View on iHerb ↗ | |||
| 4 | HerbsPro | Source Naturals, Tribulus, 60 Tabs | $10.85 | ✓ | ✓ | View on HerbsPro ↗ | |||
| 5 | iHerb | NOW Foods, Sports, Tribulus, Men's Health, 500 mg, 100 Veg Capsules | $11.44 | ✓ | ✓* | View on iHerb ↗ | |||
| 6 | HerbsPro | Amazing Nutrition, Amazing India Tribulus, 630 mg, 120 Veg Caps | $14.37 | ✓ | ✓ | View on HerbsPro ↗ | |||
| 7 | Green's Nutrition | Nutricost Tribulus Capsules 240 Count | $18.95 | ✓ | ✓* | View on Green's Nutrition ↗ | |||
| 8 | Green's Nutrition | Solaray Vital Extracts Tribulus 60 Veg Caps | $25.29 | ✓ | ✓* | View on Green's Nutrition ↗ |
1. Natural Health Products monograph: Tribulus - Tribulus terrestris. Health Canada, 29 May 2026. webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=tribulus.terrestris&lang=eng
2. RASFF notifications on tribulus food supplements: 2025.5145, 2026.1396, 2026.2570, 2026.2571, 2026.3040, 2026.4581 (Sweden and Denmark). European Commission, RASFF Window, Jul 2025 to May 2026. webgate.ec.europa.eu/rasff-window/screen/search
3. CAERS adverse event reports, brand name “tribulus”, 4 Oct 2024 to 4 Oct 2026 (3 reports). US Food and Drug Administration (openFDA food adverse events), data to 7 Jul 2026. api.fda.gov/food/event.json?search=products.name_brand:tribulus+AND+date_created:[20241004+TO+20261004]&limit=5
4. Siddiqui et al. Tribulus terrestris fruit powder in prehypertension: placebo-controlled trial. Journal of Complementary and Integrative Medicine 18(4):783, 2021. doi.org/10.1515/jcim-2020-0322
5. Fatima and Sultana. Tribulus terrestris for menopausal symptoms: single-blind randomized trial (60 women). Advances in Integrative Medicine 4(2):56, 2017. doi.org/10.1016/j.aimed.2017.04.005
6. Tribulus. LiverTox: clinical and research information on drug-induced liver injury (NBK583201). US National Institutes of Health, 8 Aug 2022. www.ncbi.nlm.nih.gov/books/NBK583201/
7. Tribuli terrestris herba: final public statement (EMA/HMPC/308436/2023) and assessment report (EMA/HMPC/886105/2022). European Medicines Agency, adopted 20 Nov 2024; published 25 Feb 2025. www.ema.europa.eu/en/medicines/herbal/tribuli-terrestris-herba
8. Vilar Neto et al. Tribulus supplementation, erectile dysfunction and testosterone in men: systematic review. Nutrients, 2025. doi.org/10.3390/nu17071275
9. Suharyani et al. Tribulus terrestris and erectile dysfunction: meta-analysis. International Journal of Impotence Research, 2026. doi.org/10.1038/s41443-025-01086-7
10. Ho et al. Herbal medicines for erectile dysfunction: meta-analysis of 14 randomized trials. Journal of Traditional and Complementary Medicine, 2026. doi.org/10.1016/j.jtcme.2025.11.001
11. Tribulus terrestris as an ingredient in dietary supplements. US Department of Defense, Operation Supplement Safety, 12 Jun 2024. www.opss.org/article/tribulus-terrestris-ingredient-dietary-supplements
12. Fernandez-Lazaro et al. Tribulus terrestris in trained men: 6-week randomized trial. International Journal of Environmental Research and Public Health, 2022. doi.org/10.3390/ijerph192316158
13. Petre et al. Supplements for erectile dysfunction: systematic review and meta-analysis, with an audit of 27 products. Nutrients 15(17):3677, 2023. doi.org/10.3390/nu15173677
14. Ataee and Dadpour. Acute liver failure following Tribulus terrestris consumption in an Iranian woman: case report. Asia Pacific Journal of Medical Toxicology, 2020. apjmt.mums.ac.ir/article_15318.html
15. Godevac et al. Chemical analysis of 27 commercial Tribulus terrestris products (LC-HRMS). Food Chemistry: X, 2025. doi.org/10.1016/j.fochx.2025.102476
16. Import Alert 99-19: detention without physical examination of food products due to Salmonella (Samasta Foods Pvt. Ltd., Organic Gokhru (Gokshura) Powder). US Food and Drug Administration, firm listed 25 Oct 2024. www.accessdata.fda.gov/cms_ia/importalert_263.html
17. openFDA food and drug enforcement reports, “tribulus” (newest 2019); warning-letter database, “tribulus”, “gokshura” and “gokhru” (none since 2021). US Food and Drug Administration, 4 Oct 2026. api.fda.gov/food/enforcement.json?search=product_description:tribulus&limit=10
18. GRAS Notice Inventory, search “tribulus” (no records found). US Food and Drug Administration, 4 Oct 2026. www.fda.gov/food/generally-recognized-safe-gras/gras-notice-inventory
19. List of ingredients used exclusively as pharmaceuticals: hamabishi (Tribulus terrestris), fruit (translated). Ministry of Health, Labour and Welfare (Japan), list in force. www.mhlw.go.jp/file/06-Seisakujouhou-11130500-Shokuhinanzenbu/0000086062_1.pdf
20. Kamenov et al. Tribulus terrestris (Tribestan) for mild to moderate erectile dysfunction: phase IV randomized trial (180 men). Maturitas 99:20, 2017. doi.org/10.1016/j.maturitas.2017.01.011
21. Postigo et al. Tribulus terrestris and sexual function in postmenopausal women: randomized trial. Revista Brasileira de Ginecologia e Obstetrícia, 2016. doi.org/10.1055/s-0036-1571472
22. de Souza et al. Tribulus terrestris for low sexual desire in postmenopausal women: randomized trial. Menopause, 2016. doi.org/10.1097/GME.0000000000000766
23. Martimbianco et al. Tribulus terrestris for female sexual dysfunction: systematic review. Revista Brasileira de Ginecologia e Obstetrícia, 2020. doi.org/10.1055/s-0040-1712123
