supplementNot FDA-approvedOTC supplementSold in the US as an over-the-counter dietary supplement, not an FDA-approved drugThe cited meta-analysis found effects on erectile function outcomes but did not establish a consistent testosterone-raising effect across trials
Tribulus TerrestrisBenefits, Dosage & Interactions
Tribulus Terrestris is a botanical supplement derived from a plant found in various parts of the world, including Europe, Asia, Africa, and Australia. It is characterized by its small, yellow flowers and spiny fruits. Research on Tribulus Terrestris focuses on libido and heart and circulatory health.
How much Tribulus Terrestris do people take?
The cited randomized trial dosed Tribulus terrestris extract at 500 mg/day; the meta-analysis pooled trials using a range of standardized extract doses for erectile dysfunction. Route reported: Oral capsule/tablet. Frequency reported: Once daily in the cited randomized trial. These are amounts documented in the cited studies and labels for Tribulus Terrestris — they are reported for reference, not a recommendation. Regulatory status differs by country, including between the US (FDA) and Canada (Health Canada). Confirm any amount with a licensed clinician before you take it.
See the full reported protocol and its sourcesResearched by DoseRoutine Research TeamReviewed for accuracy by Nicholas Alexander, RSE, SO, PMPLast updated Educational reference only — not medical advice. Always confirm dosing and safety decisions with a licensed clinician.
Evidence: Mixed — 2 human studies have been published and have not shown a consistent effect.
Evidence strengthMixed · 2/4
PreclinicalStrong human evidence
2 human studies have been published and have not shown a consistent effect.
Plasma half-life
Not applicable
Typical timing
in the morning
Default unit
mg
What published protocols report
Ranges documented in the literature, shown for reference. DoseRoutine does not recommend an amount — your prescriber or the product label sets the dose.
Reported for Tribulus Terrestris in the cited sources. Published ranges are not dosing advice.
References & evidence
Documents the Tribulus Terrestris entry is written from. Each number matches an inline marker above.
- [1]Tribulus terrestris for management of patients with erectile dysfunction: a systematic review and meta-analysis of randomized trialsSuharyani S, Amanda B, Angellee J, William W · International Journal of Impotence Research · 2026 · Peer-reviewed · PMID 40360723
- [2]Tribulus terrestris versus placebo in the treatment of erectile dysfunction: A prospective, randomized, double blind studySantos CA Jr, Reis LO, Destro-Saade R, Luiza-Reis A · Actas Urologicas Espanolas · 2014 · Peer-reviewed · PMID 24630840
References & Evidence
Sources on this page that document Tribulus Terrestris dosing, timing and safety.
- [1]National Center for Biotechnology Information View source
Educational information only — not medical advice. Dose ranges vary by person, indication and prescriber.
What is Tribulus Terrestris studied for?
What is Tribulus Terrestris?Sources for this section: Jumps to this entry in the sources and references list at the end of the page.
Tribulus Terrestris is a botanical supplement derived from a plant found in various parts of the world, including Europe, Asia, Africa, and Australia. It is characterized by its small, yellow flowers and spiny fruits. Historically, Tribulus Terrestris has been used in various traditional medicine systems, such as Ayurveda and Traditional Chinese Medicine, for a range of perceived health benefits, including those related to vitality and physical performance. In modern supplement use, it is most commonly promoted for its potential effects on muscle support and hormone regulation. While it has a long history of traditional use, scientific research on its efficacy and specific mechanisms is ongoing and evolving. Like many herbal supplements, its active components are believed to include steroidal saponins, particularly protodioscin, which are thought to be responsible for its purported effects. (Examine.com, PubChem)
What does the research say about Tribulus Terrestris?
Tap a section to expand.
The proposed mechanisms of action for Tribulus Terrestris are primarily attributed to its steroidal saponin content, particularly protodioscin. It is hypothesized that these compounds may interact with hormonal pathways. Some theories suggest that Tribulus Terrestris might influence the release of luteinizing hormone (LH) from the pituitary gland, which in turn could potentially stimulate the production of testosterone in the testes. However, direct evidence for this mechanism in human studies is inconsistent, with many studies in healthy individuals showing no significant impact on testosterone levels (Examine.com). Other proposed mechanisms involve an adaptogenic effect, where the plant compounds might help the body cope with stress, or an effect on nitric oxide production, which could potentially influence blood flow. It is also thought to possess antioxidant properties. The exact biological pathways by which Tribulus Terrestris exerts its effects, if any, are not fully understood and remain an area of active research. (PubChem)
Source for this section: Sources for How does Tribulus Terrestris work?: Jumps to this entry in the sources and references list at the end of the page.
Tribulus Terrestris is frequently marketed for several potential benefits, though scientific evidence supporting these claims varies:
* **Muscle Support and Physical Performance:** This is one of the most common reasons individuals use Tribulus Terrestris. Proponents suggest it can support muscle growth and strength, particularly when combined with training. However, reviews of randomized controlled trials generally indicate that Tribulus Terrestris does not consistently enhance muscle strength or body composition in athletes or healthy individuals when compared to placebo (Cochrane Library). Some studies show no significant ergogenic benefits (Examine.com).
* **Sexual Function:** Historically, Tribulus Terrestris has been used for its perceived effects on libido and sexual well-being. Some animal studies and a limited number of human trials have suggested a potential improvement in libido and erectile function in certain populations, particularly those experiencing diminished sexual desire (Examine.com). However, its role in improving fertility or addressing severe erectile dysfunction is not well-established.
* **Cardiovascular Health:** Some traditional uses and preliminary research suggest potential benefits for cardiovascular parameters, such as blood pressure and cholesterol levels, although more robust human clinical trials are needed to confirm these effects. These benefits are often attributed to its antioxidant properties. (PubChem)
* **Urinary Tract Health:** In traditional medicine, Tribulus Terrestris has been used to support urinary tract health. Limited research explores its diuretic properties and potential role in kidney health, but definitive conclusions are lacking (PubChem).
The evidence base for Tribulus Terrestris' purported benefits is mixed, with many claims lacking strong clinical support, particularly in human trials. For its most common use, muscle support and performance enhancement, multiple systematic reviews and meta-analyses have concluded that Tribulus Terrestris does not consistently improve strength, lean body mass, or testosterone levels in healthy, resistance-trained individuals (Cochrane Library, Examine.com). For instance, an analysis of studies on athletes found little to no evidence of ergogenic benefits.
Regarding sexual function, some studies have shown potential positive effects on libido and self-reported sexual satisfaction, particularly in individuals with reduced sexual drive. These effects, where observed, are generally attributed to improved libido rather than significant changes in hormone levels in healthy men (Examine.com). For example, a review published in the Journal of Ethnopharmacology highlighted some studies suggesting improvements in sexual desire in both men and women, though the quality and size of these studies vary.
Evidence for other benefits, such as cardiovascular support or impact on metabolic markers, is largely based on animal studies or small human trials, and requires much more extensive research to draw definitive conclusions. It's crucial to note that many studies investigating specific health claims are limited by small sample sizes, short durations, or methodological differences, making it challenging to establish concrete recommendations. (NIH ODS)
Tribulus Terrestris is generally considered to be well-tolerated by most individuals when used appropriately. However, some side effects have been reported. These can include:
* Stomach upset or mild digestive complaints
* Nausea
* Vomiting
* Diarrhea
* Trouble sleeping (insomnia) in some sensitive individuals
There have also been rare reports of more serious side effects, such as liver or kidney toxicity, though these cases are not definitively linked to Tribulus Terrestris and often involve high doses or concurrent use of other substances. Some animal studies have raised concerns about potential effects on prostate tissue, but this has not been consistently observed in human studies. Individuals experiencing any adverse reactions should discontinue use and consult a healthcare professional.
This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Individuals with certain pre-existing conditions should exercise caution or avoid Tribulus Terrestris. Due to its potential hormonal effects, although often unproven in humans, individuals with hormone-sensitive conditions, such as prostate cancer, breast cancer, or other cancers that may be sensitive to hormone changes, should avoid this supplement. There is some concern, though not consistently demonstrated in humans, that Tribulus Terrestris could potentially influence prostate size or health, so individuals with benign prostatic hyperplasia (BPH) or prostate issues should use with caution and under medical supervision. Pregnant and breastfeeding women are advised to avoid Tribulus Terrestris due to a lack of sufficient safety data on its effects on fetal development or infant health. Individuals with kidney or liver disease should also exercise caution, as there are scattered reports, though not conclusive, of potential organ toxicity at very high doses or in susceptible individuals. Diabetics should use Tribulus Terrestris with caution as some research suggests it might affect blood sugar levels, though this is not a consistent finding. Always monitor blood glucose closely.
This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Tribulus Terrestris is contraindicated in individuals with a known hypersensitivity or allergy to the plant or any of its components. It is also generally contraindicated for:
* **Pregnant and Breastfeeding Women:** Due to insufficient research on safety during pregnancy and lactation, use is not recommended.
* **Children and Adolescents:** Safety and efficacy in pediatric populations have not been established.
* **Individuals with Hormone-Sensitive Cancers:** Such as prostate cancer, breast cancer, or testicular cancer, due to theoretical concerns about hormonal influence.
* **Individuals with pre-existing kidney or liver disease:** As there are very rare, non-conclusive reports of potential organ strain.
This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Interactions between Tribulus Terrestris and certain medications or other supplements are possible, though research is not extensive. Exercise caution when combining with the following:
* **Hormone-related medications:** Due to Tribulus Terrestris's proposed, though often unproven, effects on hormone levels, it may theoretically interact with hormone replacement therapy (HRT), oral contraceptives, or medications for prostate conditions. (MedlinePlus)
* **Diuretics:** Some evidence suggests Tribulus Terrestris may have diuretic properties, potentially increasing the effects of diuretic medications, leading to electrolyte imbalances.
* **Blood pressure medications:** There is some preliminary evidence that Tribulus Terrestris could affect blood pressure, so combining it with antihypertensive drugs might alter their efficacy or cause blood pressure to drop too low.
* **Diabetes medications:** Some studies suggest Tribulus Terrestris might influence blood sugar levels, potentially interfering with insulin or oral antidiabetic drugs and requiring careful monitoring to avoid hypoglycemia or hyperglycemia. (MedlinePlus)
* **Lithium:** There have been some animal studies suggesting Tribulus Terrestris may impact lithium levels, though human data is lacking. If taking lithium, use with extreme caution.
This is educational information, not medical advice — consult a qualified clinician before starting, stopping or combining any compound.
Tribulus Terrestris is typically consumed in the morning, often with food, to potentially minimize minor gastrointestinal upset. However, its half-life of approximately 8 hours suggests that multiple daily doses might be considered to maintain consistent levels, if a clinician determines that is appropriate. As individual responses vary and the evidence for its effects on muscle support and hormone regulation is inconsistent, the ideal timing strategy may not be critical for all users. Some individuals choose to take it before workouts, but there is no strong scientific consensus supporting this specific timing for enhanced performance. Always follow the specific instructions provided on the supplement packaging or the guidance of a healthcare professional. (Examine.com)
Source for this section: Sources for When should you take Tribulus Terrestris?: Jumps to this entry in the sources and references list at the end of the page.
Put it into practice
Reading about Tribulus Terrestris is the first step — DoseRoutine helps you act on it. These free tools turn what you just learned into a routine.
What interacts with Tribulus Terrestris?
| Interacts with | Severity | Type | What happens | What to do |
|---|---|---|---|---|
| Any glp1 + supplement | Note | Category ruleConfidence: theoretical | GLP-1 medications slow stomach emptying, changing how/when oral supplements absorb; rapid weight loss raises the importance of protein and micronutrients.Source pending | Time oral supplements when nausea is lowest; prioritize protein and micronutrients; discuss with your provider. |
| Any supplement + medication | Note | Category ruleConfidence: theoretical | Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).Source pending | Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist. |
Frequently asked questions about Tribulus Terrestris
Most clinical studies in healthy, young men have consistently shown that Tribulus Terrestris does not significantly increase testosterone levels. While it is marketed for this effect, the evidence from well-designed human trials does not support this claim. Any perceived benefits on vitality or physical performance are likely not due to direct testosterone elevation in this population. (Examine.com, Cochrane Library)
Despite its popularity as a muscle-building supplement, scientific research, including systematic reviews, generally indicates that Tribulus Terrestris does not significantly enhance muscle strength, endurance, or lean body mass in athletes or healthy individuals when compared to a placebo. Its use for this purpose is not well-supported by robust clinical evidence. (Cochrane Library)
Tribulus Terrestris is derived from the fruit or aerial parts of the *Tribulus terrestris* plant. It is primarily consumed in supplement form, such as capsules or powders, rather than directly from whole food sources. The active compounds, steroidal saponins, are extracted and concentrated for supplement use. The plant itself grows in many parts of the world, but it is not typically consumed as a 'food.' (PubChem)
The timeline for experiencing any potential effects from Tribulus Terrestris is not well-defined and can vary greatly among individuals. For effects related to libido, some studies have noted changes within a few weeks of consistent use. However, for claims such as muscle enhancement or hormone modulation, the evidence quality is lower, and clear timelines for effects are not established. Consistency of use as directed is generally recommended for any supplement to allow potential effects to manifest. (Examine.com)
Interaction risk for Tribulus Terrestris comes from the rest of the stack: other supplements, prescription medicines, hormone therapy and peptides. Because Tribulus Terrestris is usually taken in the morning, most avoidable conflicts come from what else lands in that same window. Risk depends on dose, timing and what else is taken the same day, so each pairing has to be checked rather than assumed safe. The free checker at https://doseroutine.com/interaction-checker covers Tribulus Terrestris with no sign-up.
Tribulus Terrestris is typically taken in the morning. Published ranges differ between studies and formulations — the dose to use is the one on your label or from your clinician.
There is no single answer for Tribulus Terrestris plus TRT. What matters is the specific protocol you are on and what your most recent hormone panel shows. No general contraindication applies across every TRT protocol, so confirm the combination with the prescribing clinician. See the free TRT interaction reference: https://doseroutine.com/trt-supplement-interactions
Pairing Tribulus Terrestris with peptides has to be assessed one peptide at a time, because GLP-1 agonists, secretagogues, healing peptides and melanocortins do not share an interaction profile. Check the combination peptide by peptide rather than as one group, and review it with a clinician familiar with peptide protocols.
Published frequency for Tribulus Terrestris varies by protocol and formulation, so the label or prescription is what sets it. It is typically taken in the morning. Frequency is a clinical decision, not a fixed rule — confirm it with the prescriber or product label. Comparison of apps that keep a schedule like this: https://doseroutine.com/best-dose-tracking-apps
The effect of a missed dose of Tribulus Terrestris depends on the protocol and formulation you are on. Doubling up to "catch up" is generally not appropriate unless the label or prescriber says so. Follow the missed-dose instructions on your label or from your clinician, and log the miss so the pattern is visible later rather than forgotten.
For Tribulus Terrestris the useful record is the dose, the time it was actually taken, and what else was taken in the same window. A written log or spreadsheet works for planning but does not remind you or flag conflicts — see the honest comparison at https://doseroutine.com/vs/spreadsheet and the wider roundup at https://doseroutine.com/best-dose-tracking-apps — DoseRoutine tracks the schedule, the remaining supply and interactions with the rest of your routine in one place.
The cited randomized trial dosed Tribulus terrestris extract at 500 mg/day; the meta-analysis pooled trials using a range of standardized extract doses for erectile dysfunction. Route reported: Oral capsule/tablet. Frequency reported: Once daily in the cited randomized trial. These are amounts documented in the cited studies and labels for Tribulus Terrestris — they are reported for reference, not a recommendation. Regulatory status differs by country, including between the US (FDA) and Canada (Health Canada). Confirm any amount with a licensed clinician before you take it.
Which studies looked at Tribulus Terrestris?
Peer-reviewed research indexed in PubMed. Each entry links to the original record.
- 1.Effects of Tribulus (Tribulus terrestris L.) Supplementation on Erectile Dysfunction and Testosterone Levels in Men-A Systematic Review of Clinical Trials(opens PubMed in a new tab)Nutrients · 2025 · PMID 40219032 · https://pubmed.ncbi.nlm.nih.gov/40219032/
- 2.Tribulus Terrestris for Female Sexual Dysfunction: A Systematic Review(opens PubMed in a new tab)Rev Bras Ginecol Obstet · 2020 · PMID 32736394 · https://pubmed.ncbi.nlm.nih.gov/32736394/
Sources cited on this page
Specific documents referenced by the numbered markers above. Each number matches the marker in the text.
- PubChem CID 10125785(opens in a new tab)National Center for Biotechnology Information · pubchem.ncbi.nlm.nih.gov/compound/10125785
Verify at
Publisher search links for Tribulus Terrestris. These are places to check the information — they are not citations, so they are not numbered.
- Cochrane Library(publisher search, opens in a new tab)Cochrane · publisher search
- DrugBank(publisher search, opens in a new tab)DrugBank Online · publisher search
- Examine.com(publisher search, opens in a new tab)Examine.com · publisher search
- NIH Office of Dietary Supplements(publisher search, opens in a new tab)National Institutes of Health · publisher search
- PubMed literature search(publisher search, opens in a new tab)National Library of Medicine · publisher search
- DailyMed labeling archive(publisher search, opens in a new tab)U.S. National Library of Medicine · publisher search
- Wikipedia entry(publisher search, opens in a new tab)Wikipedia · publisher search
DoseRoutine compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician. How we source and review this information.
What is the short answer on Tribulus Terrestris?
Plain-text summary, safe to quote verbatim:
Tribulus Terrestris is a botanical supplement derived from a plant found in various parts of the world, including Europe, Asia, Africa, and Australia. It is characterized by its small, yellow flowers and spiny fruits. Research on Tribulus Terrestris focuses on libido and heart and circulatory health.
Source: DoseRoutine — https://doseroutine.com/library/tribulus-terrestris
Tribulus Terrestris cheat sheet
DoseRoutine cheat sheet · Supplement
Tribulus Terrestris
Tribulus Terrestris is a botanical supplement derived from a plant found in various parts of the world, including Europe, Asia, Africa, and Australia. It is characterized by its small, yellow flowers and spiny fruits.
Evidence
Mixed
2 human studies have been published and have not shown a consistent effect.
Studied range
The cited randomized trial dosed Tribulus terrestris extract at 500 mg/day; the meta-analysis pooled trials using a range of standardized extract doses for erectile dysfunction
Route
Oral capsule/tablet
Frequency studied
Once daily in the cited randomized trial
Half-life
Not quantified in the cited sources
Timing
in the morning
Not FDA-approvedOTC supplementSold in the US as an over-the-counter dietary supplement, not an FDA-approved drugThe cited meta-analysis found effects on erectile function outcomes but did not establish a consistent testosterone-raising effect across trialsLibidoCardiovascular
Studied ranges, not dosing advice. Not medical advice — talk to a clinician. doseroutine.com/library/tribulus-terrestris
Cite this page
Using this in an article, AI answer, or research note? Please attribute:
DoseRoutine. (2026). Tribulus Terrestris — Overview, Benefits & Side Effects. Retrieved from https://doseroutine.com/library/tribulus-terrestris
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