Ingredient Guide
Tribulus Terrestris: Benefits, Dosage, and What the Research Says
What the clinical research actually shows about sexual health, testosterone, and performance
Written by Jessica Medson
Tribulus terrestris (puncture vine) is a plant supplement used for centuries in Ayurvedic and Traditional Chinese Medicine, now primarily studied for sexual health support and marketed as a testosterone booster. In clinical trials, it modestly improved sexual function scores in women with low desire across multiple RCTs, and produced inconsistent results for erectile function in men. A 2025 systematic review of 10 clinical trials found no robust evidence that it raises testosterone in healthy men, and at standard doses of 250 to 750 mg per day it is generally tolerated short-term, though rare but serious cases of drug-induced liver injury and statin-interaction rhabdomyolysis have been reported.
What Is Tribulus Terrestris?
Tribulus terrestris is a flowering plant native to warm temperate and tropical regions across southern Europe, Asia, Africa, and Australia. Common names include puncture vine, caltrop, and goat's head, references to the sharp, spiny fruits that can puncture bicycle tires and leather. In traditional medicine, Tribulus has been used for centuries in Ayurvedic practice and Traditional Chinese Medicine to support urinary health, vitality, and reproductive function.
Today, Tribulus terrestris is widely available in supplement form, most often marketed for sexual health support, male vitality, and athletic performance. Commercial extracts are standardized from the aerial plant parts (leaves, stems) or the fruit, with the focus almost always on steroidal saponin content.8
The plant's principal bioactive constituents include:
- Steroidal saponins: furostanol and spirostanol glycosides, including protodioscin and protogracillin. Researchers have isolated 108 distinct steroidal saponins from Tribulus to date, making saponins both the most characterized and the most commercially prioritized compound class.8
- Flavonoids: kaempferol, quercetin, and related compounds with antioxidant properties
- Alkaloids and phenolic acids: present in smaller quantities and less studied in humans
Saponin content varies considerably by geographic origin, plant part, and extraction method, creating a real challenge when comparing results across clinical studies or evaluating supplement products.
How Does It Work? The Role of Steroidal Saponins
The biological activity of Tribulus terrestris is attributed primarily to its steroidal saponins, with protodioscin receiving the most research attention. Several mechanisms have been proposed, most of them derived from animal and cell studies:8
Proposed mechanisms
- DHEA conversion pathway: Protodioscin is theorized to be converted in the body into dehydroepiandrosterone (DHEA), a steroid precursor that can feed into testosterone and estrogen synthesis. While this has been observed in some preclinical settings, consistent evidence for meaningful DHEA or testosterone increases in human clinical trials has not been established.15
- Luteinizing hormone (LH) stimulation: Some researchers propose that Tribulus may signal the pituitary gland to secrete more LH, which in turn stimulates testicular testosterone production. Most human studies, however, have not found significant LH changes following supplementation.4
- Nitric oxide pathway support: Preclinical research suggests steroidal saponins may relax smooth muscle in penile corpora cavernosa via nitric oxide signaling, which could support erectile function through a pathway independent of testosterone.8
- Antioxidant and anti-inflammatory effects: Animal research indicates Tribulus extracts may enhance superoxide dismutase and catalase activity and suppress NF-kB inflammatory signaling. Human evidence for these specific effects remains limited.8
These mechanisms provide a plausible biological rationale, but most have not been consistently confirmed in well-controlled human trials. A 2025 systematic review of 10 clinical trials in men concluded there is no robust human evidence for testosterone increases in individuals with normal baseline levels.15
Sexual Health Support: What the Research Shows
Sexual health support is the most studied and most consistently supported application of Tribulus terrestris. The evidence is more favorable for women than for men, though both bodies of literature carry significant methodological limitations.
What the research shows: Women
A 2020 systematic review of five RCTs involving 279 participants found that both premenopausal and postmenopausal women receiving Tribulus terrestris experienced significant improvements in total sexual function scores after one to three months of treatment, with gains across desire, arousal, lubrication, and satisfaction domains. The authors stress that the certainty of this evidence is very low due to methodological limitations in the underlying trials.10
A 2018 double-blind, placebo-controlled RCT of 40 premenopausal women with hypoactive sexual desire disorder (HSDD) found significant improvements in desire, arousal, lubrication, orgasm, and satisfaction versus the placebo group, alongside elevated free and bioavailable testosterone levels.9 A separate 2014 RCT of 60 women with HSDD (30 per group) reported significant improvements across nearly all FSFI domains, including desire (p less than 0.001), arousal (p = 0.037), lubrication (p less than 0.001), and satisfaction (p less than 0.001) at 7.5 mg per day for four weeks.2
What the research shows: Men
Results for men are more mixed. A 2025 systematic review of 10 clinical trials in 483 men (ages 16 to 70) found that Tribulus supplementation at 400 to 750 mg per day for one to three months improved erectile function in 3 of 5 studies that measured it, but 8 of 10 studies reported no significant change in testosterone or androgen levels.15
A well-designed 2017 phase IV RCT (n = 172, 86 per arm) found that a standardized Tribulus extract at approximately 1,500 mg per day in divided doses for 12 weeks produced a statistically significant improvement in IIEF (International Index of Erectile Function) scores versus placebo (mean difference 2.70 points, 95% CI 1.40 to 4.01, p less than 0.0001), with improvements in sexual desire, intercourse satisfaction, and orgasmic function.7 An earlier 2016 pilot study in 30 men with partial androgen deficiency (PADAM) also found significant improvements in IIEF-5 scores and total and free testosterone after 750 mg per day for three months, though LH levels remained unchanged, complicating the proposed mechanism.4
However, a 2014 RCT of 30 men found that 800 mg per day for 30 days improved IIEF-5 scores in both groups but produced no statistically significant advantage over placebo (p = 0.79).3 A 2017 RCT of 30 men with unexplained infertility found no significant effect on testosterone, LH, or any semen parameter after 750 mg per day for three months.6
Research suggests Tribulus terrestris may help support sexual function in some populations, particularly women experiencing low sexual desire. For men, results are inconsistent, and the ingredient does not appear to reliably raise testosterone or improve sexual outcomes across all populations studied.
Athletic Performance and Testosterone Levels
Tribulus terrestris is heavily promoted as a natural testosterone booster and exercise performance enhancer. The published human evidence does not currently support these claims in healthy men with normal testosterone.
What the research shows
A 2022 systematic review of 7 studies in physically active adult males found no clear evidence that Tribulus supplementation improves muscle damage markers or hormonal behavior, including testosterone. The review noted some modest improvements in lipid profiles among supplemented individuals, but identified no consistent athletic performance benefit and no confirmed toxicity at supplement doses.12
An early but frequently cited 2000 RCT found that eight weeks of Tribulus supplementation in 15 resistance-trained males produced no significant changes in body weight, body fat percentage, or total body water. The placebo group showed greater bench press improvement (plus 28.4%) than the Tribulus group (plus 3.1%), though neither difference reached statistical significance between groups.1
A 2021 single-blind, placebo-controlled RCT in male CrossFit athletes (770 mg per day for six weeks) found no significant group-by-time interactions for body composition or most performance outcomes. Minor exploratory-level effects on testosterone and bench press performance were noted, but no conclusions about clinical benefit can be drawn from these secondary analyses.11
The 2025 systematic review of 10 clinical trials confirmed that 8 of 10 studies in men reported no significant changes in androgen profile. The two studies that did find positive hormonal effects enrolled men with already-low baseline testosterone, not healthy men in the normal hormonal range.15
Preclinical data support a plausible conversion pathway from protodioscin to DHEA, but this has not translated into consistent, meaningful hormonal or performance benefits in human trials. Individuals with clinically confirmed low testosterone should consult a licensed healthcare provider rather than relying on a supplement alone.
Blood Sugar and Lipid Support: Preliminary Evidence
Traditional medicine systems have applied Tribulus terrestris to metabolic and urinary conditions for centuries. A small number of human studies have examined whether this translates to measurable effects on blood sugar and lipids.
What the research shows
A randomized controlled trial of 98 women with type 2 diabetes assigned participants to 1,000 mg per day of a hydroalcoholic Tribulus extract or placebo for three months. The treatment group demonstrated a statistically significant reduction in fasting blood glucose and LDL cholesterol compared to placebo (p less than 0.05), with no significant changes in triglycerides or HDL cholesterol. The authors described these as "preliminary promising" findings and explicitly called for larger confirmatory trials before conclusions can be drawn.5
This represents a single RCT in one specific population. Preclinical studies in animal models provide additional supportive context, but human evidence is insufficient for firm conclusions about glucose or lipid management. Tribulus terrestris should never be used as a replacement for prescribed antidiabetic medications. Individuals managing diabetes or dyslipidemia with medication should consult their healthcare provider before adding any supplement.
Safety, Side Effects, and Drug Interactions
At standard doses of 250 to 750 mg per day used in clinical trials lasting up to three months, Tribulus terrestris has generally been well tolerated, with adverse event rates similar between treatment and placebo groups in most studies.79
Common reported side effects
- Mild gastrointestinal discomfort or nausea
- Dyspepsia and diarrhea
- Dizziness (noted in some women's studies)
Serious adverse events (rare)
Despite generally acceptable short-term tolerability, serious adverse events have been documented in case reports. These appear to be rare but clinically significant:
- Hepatotoxicity and nephrotoxicity: A 2024 case report described a 46-year-old who developed severe jaundice (total bilirubin 48 mg/dL) and acute kidney injury (creatinine 7.1) after two months of daily Tribulus supplementation. Liver biopsy confirmed drug-induced liver injury. The patient required three plasmapheresis sessions before recovering.13
- Rhabdomyolysis: A 2024 case report described a 71-year-old man taking Tribulus alongside atorvastatin who developed severe muscle breakdown, with creatine phosphokinase peaking at 11,972 U/L on day 4. The authors identified Tribulus as a moderate CYP3A4 inhibitor that can impair statin clearance and elevate risk of muscle injury and drug-induced liver injury.14
Drug interactions
- Statins (atorvastatin, simvastatin, lovastatin): Moderate CYP3A4 inhibition by Tribulus may reduce statin metabolism, raise drug plasma levels, and increase risk of statin-induced muscle injury or liver toxicity. Do not combine without medical supervision.14
- Antidiabetic medications: Potential additive glucose-lowering effect when used alongside insulin or oral hypoglycemics; monitor blood glucose closely.5
- Anticoagulants and antiplatelet agents: Theoretical interaction supported by preclinical data; consult your healthcare provider.
- Hormone therapies: Potential androgenic activity warrants caution when combined with hormone-sensitive medications.
Contraindications
- Pregnancy and breastfeeding: Safety has not been established. Avoid use.
- Children and adolescents: No safety or dosing data available; avoid.
- Hormone-sensitive conditions: Caution is warranted for individuals with hormone-sensitive cancers or related diagnoses.
- Pre-existing liver or kidney disease: High doses should be considered potentially hazardous in these populations.
Always consult a qualified healthcare provider before starting Tribulus terrestris, especially if you take prescription medications, have a chronic health condition, or are over 65.
Tribulus Terrestris Dosage by Goal
Doses below reflect amounts used in published clinical trials. No single dose is universally agreed upon; standardization of extracts varies widely across products. Start at the lower end and consult a healthcare provider, especially if taking prescription medications.
| Goal | Typical Dose | Timing | Notes |
|---|---|---|---|
| Female sexual desire and function | 7.5 to 750 mg per day | Daily in divided doses | Wide range reflects formulation differences across RCTs; benefit seen from 4 to 12 weeks; standardize to saponin content |
| Erectile function support (men) | 750 to 1,500 mg per day | 3 divided doses with meals | 12-week protocols used in higher-quality trials; results inconsistent across studies |
| Blood glucose support (investigational) | 1,000 mg per day | Daily | Based on a single RCT in diabetic women only; not a substitute for prescribed antidiabetic therapy |
| Athletic performance or testosterone (investigational) | 770 mg per day | Daily for up to 6 weeks | Not supported by current RCT evidence in healthy men with normal testosterone levels |
Doses above 750 mg per day have not consistently outperformed lower amounts. Human safety data beyond 3 months are limited.
Tribulus Terrestris: What the Evidence Shows at a Glance
A summary of clinical trial findings across the primary studied outcomes. Evidence tier reflects study design quality; certainty reflects consistency and methodological rigor.
| Outcome | Population Studied | Key Clinical Finding | Evidence Strength |
|---|---|---|---|
| Sexual desire and function | Women with HSDD (premenopausal and postmenopausal) | Significant improvements in FSFI scores in multiple RCTs; 2020 systematic review confirmed consistent direction of benefit | Tier A (very low certainty) |
| Erectile function | Men with ED, PADAM, or hypogonadism | 3 of 5 RCTs showed IIEF improvement; 2 RCTs found no significant advantage over placebo | Tier A (inconsistent) |
| Testosterone levels in men | Healthy men and men with subclinical deficiency | 8 of 10 clinical trials found no significant change in total or free testosterone or androgen profile | Tier A (predominantly negative) |
| Body composition and athletic performance | Resistance-trained males and CrossFit athletes | No significant benefit in body weight, fat percentage, or strength versus placebo across multiple RCTs | Tier A (negative) |
| Fasting blood glucose and LDL cholesterol | Women with type 2 diabetes | Significant reductions at 1,000 mg per day for 3 months in one RCT; authors noted findings as preliminary | Tier A (single study, preliminary) |
Tier A = human RCT or meta-analysis. Very low certainty reflects small sample sizes, short durations, and methodological heterogeneity across trials.
Frequently Asked Questions
What is Tribulus Terrestris good for?
Tribulus terrestris is most studied for sexual health support, particularly in women with low desire. Multiple RCTs show improvements in Female Sexual Function Index scores, and a 2017 phase IV RCT in men found a statistically significant 2.70-point improvement in erectile function (IIEF) scores versus placebo. Evidence for testosterone boosting or athletic performance enhancement in healthy individuals is weak based on current clinical data.
How much Tribulus Terrestris should I take?
Clinical trials have used 250 to 1,500 mg per day, typically divided into two or three doses taken with meals. Most sexual health studies in men used 750 to 1,500 mg per day for 8 to 12 weeks. Formulation and extract standardization vary widely, so always compare products by saponin content and follow label guidance. Consult a healthcare provider before starting.
Does Tribulus Terrestris increase testosterone?
Evidence suggests it does not reliably raise testosterone in healthy men. A 2025 systematic review of 10 clinical trials found that 8 of 10 studies reported no significant change in androgen levels following supplementation. Two studies did find increases, but only in men who started with below-normal testosterone, not in those with levels in the normal range.
Is Tribulus Terrestris safe?
At standard doses of 250 to 750 mg per day for up to three months, most clinical trials report good tolerability with adverse events similar to placebo. However, rare but serious cases of liver injury (bilirubin reaching 48 mg/dL in one case report) and rhabdomyolysis have been documented. People taking statins or with liver or kidney disease face higher risk and should consult a physician before use.
What are Tribulus Terrestris side effects?
The most common side effects are mild and gastrointestinal: nausea, stomach discomfort, and diarrhea. Dizziness has been noted in some women's studies. In rare cases, serious adverse events including drug-induced liver injury (with bilirubin reaching 48 mg/dL in one case) and rhabdomyolysis (CPK peaking at 11,972 U/L in a statin interaction case) have been reported in the medical literature.
Does Tribulus Terrestris work for erectile dysfunction?
Results are mixed. A well-designed 2017 RCT of 172 men found a statistically significant improvement in IIEF scores over placebo at 1,500 mg per day for 12 weeks. However, a 2014 RCT of 30 men found no significant benefit over placebo. A 2025 systematic review concluded that only 3 of 5 trials showed improved erectile function and the overall level of evidence is low.
Can women take Tribulus Terrestris?
Yes, and female sexual function is one of the better-supported applications. A systematic review of five RCTs found significant improvements in sexual function scores in premenopausal and postmenopausal women. A 2018 RCT of 40 women with low desire showed significant gains in desire, arousal, lubrication, orgasm, and satisfaction versus placebo. Avoid during pregnancy or breastfeeding due to lack of safety data in those populations.
How long does Tribulus Terrestris take to work?
Clinical trials showing sexual health benefits have used durations of four to twelve weeks. A 2014 FSFI study in women found improvements after four weeks at 7.5 mg per day, while most erectile function studies in men used 12-week protocols. Short-term use under four weeks has not been well studied for sexual health outcomes, and effects may not be apparent in the first few days of use.
Can I take Tribulus Terrestris with statins?
Use extreme caution. Research indicates Tribulus terrestris acts as a moderate CYP3A4 enzyme inhibitor, which reduces the body's ability to clear statins like atorvastatin and simvastatin. This can raise statin blood levels and significantly increase the risk of side effects, including rhabdomyolysis. A 2024 case report documented severe muscle breakdown (CPK of 11,972 U/L) in a patient combining both. Speak with your prescribing physician first.
Is Tribulus Terrestris better than ashwagandha for men's health?
The evidence differs between the two. Ashwagandha has stronger clinical support for stress reduction and shows modest testosterone support in stressed or infertile men across several RCTs. Tribulus terrestris has more RCT data specifically for erectile function, though results are inconsistent. Neither reliably raises testosterone in healthy men with normal baseline levels, and both require larger, higher-quality trials.
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Scientific References
- 1.Antonio J, Uelmen J, Rodriguez R, Earnest C The effects of Tribulus terrestris on body composition and exercise performance in resistance-trained males. International Journal of Sport Nutrition and Exercise Metabolism. 2000. PubMed: 10861339Clinical (RCT / meta-analysis)
- 2.Akhtari E, Raisi F, Keshavarz M, Hosseini H, Sohrabvand F, Bioos S, Kamalinejad M, Ghobadi A Tribulus terrestris for treatment of sexual dysfunction in women: randomized double-blind placebo-controlled study. Daru. 2014. PubMed: 24773615Clinical (RCT / meta-analysis)
- 3.Santos CA Jr, Reis LO, Destro-Saade R, Luiza-Reis A, Fregonesi A Tribulus terrestris versus placebo in the treatment of erectile dysfunction: A prospective, randomized, double blind study. Actas Urologicas Espanolas. 2014. PubMed: 24630840Clinical (RCT / meta-analysis)
- 4.Roaiah MF, El Khayat YI, GamalEl Din SF, Abd El Salam MA Pilot Study on the Effect of Botanical Medicine (Tribulus terrestris) on Serum Testosterone Level and Erectile Function in Aging Males With Partial Androgen Deficiency (PADAM). Journal of Sex and Marital Therapy. 2016. PubMed: 25849625Clinical (RCT / meta-analysis)
- 5.Babadai Samani N, Jokar A, Soveid M, Heydari M, Mosavat SH Efficacy of Tribulus Terrestris Extract on the Serum Glucose and Lipids of Women with Diabetes Mellitus. Iranian Journal of Medical Sciences. 2016. PubMed: 27840471Clinical (RCT / meta-analysis)
- 6.Roaiah MF, Elkhayat YI, Abd El Salam MA, GamalEl Din SF Prospective Analysis on the Effect of Botanical Medicine (Tribulus terrestris) on Serum Testosterone Level and Semen Parameters in Males with Unexplained Infertility. Journal of Dietary Supplements. 2017. PubMed: 27337519Clinical (RCT / meta-analysis)
- 7.Kamenov Z, Fileva S, Kalinov K, Jannini EA Evaluation of the efficacy and safety of Tribulus terrestris in male sexual dysfunction - A prospective, randomized, double-blind, placebo-controlled clinical trial. Maturitas. 2017. PubMed: 28364864Clinical (RCT / meta-analysis)
- 8.Zhu W, Du Y, Meng H, Dong Y, Li L A review of traditional pharmacological uses, phytochemistry, and pharmacological activities of Tribulus terrestris. Chemistry Central Journal. 2017. PubMed: 29086839Preclinical (animal / cell)
- 9.Castro Vale FB, Dias de Souza KZ, Rezende CR, Geber S Efficacy of Tribulus Terrestris for the treatment of premenopausal women with hypoactive sexual desire disorder: a randomized double-blinded, placebo-controlled trial. Gynecological Endocrinology. 2018. PubMed: 29172782Clinical (RCT / meta-analysis)
- 10.Martimbianco ALC, Pacheco RL, Vilarino FL, Latorraca COC, Torloni MR, Riera R Tribulus Terrestris for Female Sexual Dysfunction: A Systematic Review. Revista Brasileira de Ginecologia e Obstetricia. 2020. PubMed: 32736394Clinical (RCT / meta-analysis)
- 11.Fernandez-Lazaro D, Mielgo-Ayuso J, Del Valle Soto M, Adams DP, Gonzalez-Bernal JJ, Seco-Calvo J The Effects of 6 Weeks of Tribulus terrestris L. Supplementation on Body Composition, Hormonal Response, Perceived Exertion, and CrossFit Performance: A Randomized, Single-Blind, Placebo-Controlled Study. Nutrients. 2021. PubMed: 34836225Clinical (RCT / meta-analysis)
- 12.Fernandez-Lazaro D, Fernandez-Lazaro CI, Seco-Calvo J, Garrosa E, Adams DP, Mielgo-Ayuso J Effects of Tribulus terrestris L. on Sport and Health Biomarkers in Physically Active Adult Males: A Systematic Review. International Journal of Environmental Research and Public Health. 2022. PubMed: 35954909Clinical (RCT / meta-analysis)
- 13.Mohy-Ud-Din N, Jonassaint N Severe Liver and Renal Injury From Tribulus Terrestris. ACG Case Reports Journal. 2024. PubMed: 38328764Human observational
- 14.Huff R, Karpinska-Leydier K, Maddineni G, Begosh-Mayne D Rhabdomyolysis Risk: The Dangers of Tribulus Terrestris, an Over-the-Counter Supplement. American Journal of Case Reports. 2024. PubMed: 39012853Human observational
- 15.Vilar Neto JO, Moraes WMA, Pinto DV, da Silva CA, Roriz Caminha JS, Nunes Filho JCC, Reis CEG, Prestes J, Santos HO, Daher EDF Effects of Tribulus (Tribulus terrestris L.) Supplementation on Erectile Dysfunction and Testosterone Levels in Men - A Systematic Review of Clinical Trials. Nutrients. 2025. PubMed: 40219032Clinical (RCT / meta-analysis)