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Tribulus Terrestris Testosterone Claims vs Research
A systematic review of 11 studies concluded that Tribulus terrestris is ineffective for raising testosterone in humans and that marketing claims are unsubstantiated (Qureshi 2014, Tribulus review). Stallion Power lists tribulus eighth in its 82 mg blend, so by label arithmetic it weighs at most 10.25 mg per gummy.
Written by the Stallion Power label deskUpdated · 4 min read
What is the tribulus testosterone claim?
Tribulus is marketed for sexual function and body building. The claim most often attached to it is that it lifts testosterone (MSK, Tribulus terrestris).
The research does not back that claim. A systematic review of 11 studies could not combine them because the trials differed too much. Its conclusion was that the evidence suggests tribulus is ineffective for increasing testosterone in humans, and that the marketing claims are unsubstantiated (Qureshi 2014, Tribulus review).
A rise did show up in human studies when tribulus was part of a combined supplement, so the herb's own part is unclear. A small number of animal studies showed higher blood testosterone (Qureshi 2014, Tribulus review).
Human trials on testosterone and libido
| Question | Finding |
|---|---|
| Testosterone in humans | Evidence suggests tribulus is ineffective (Qureshi 2014, Tribulus review) |
| Testosterone with combined products | Rises appeared only when tribulus was in a mix, so its own role is unclear (MSK, Tribulus terrestris) (Qureshi 2014, Tribulus review) |
| Athletes, tribulus alone | No improvement in androgen status or physical performance (MSK, Tribulus terrestris) |
| Erectile dysfunction | Data are mixed (MSK, Tribulus terrestris) |
| Sexual function outcomes | The systematic review abstract reports none directly (Qureshi 2014, Tribulus review) |
Memorial Sloan Kettering also notes one pilot study in men with partial androgen deficiency that showed differences in testosterone and erectile function (MSK, Tribulus terrestris). A pilot study is a start, not a verdict, and it is one study.
The review authors suggest nitric oxide release might explain some effects without any change in testosterone (Qureshi 2014, Tribulus review). That is an idea, not a finding.
What does this mean for a gummy?
Stallion Power does not claim a testosterone effect on its label, and we do not claim one for it. The label lists Tribulus Terrestris eighth in its 82 mg proprietary blend and prints no amount.
Blend lines go in descending order by weight (21 CFR 101.36, Supplement Facts). Eighth place caps tribulus at 82 divided by 8, or 10.25 mg. With caffeine printed at 5 mg in fifth place, the tighter ceiling is 5 mg.
It is arithmetic on a printed label, not a lab result, and a real gummy can hold less. Neither source we read sets a dose to compare with, and Memorial Sloan Kettering gives no safe dose (MSK, Tribulus terrestris).
The tribulus terrestris page shows the full line, and the ingredients overview shows all nine.
Stallion Power: from $49 a bottle30 gummies a bottle · 2, 3 or 6 bottles · free shipping on 3 or 6 · 60-day guarantee
See packsSafety notes
Reported effects include stomach irritation and reflux. Case reports describe kidney problems, severe hyperbilirubinemia with acute renal failure, and priapism. Possible interactions with diuretics, blood pressure medicines, diabetes medicines and clopidogrel are listed, with unknown clinical relevance (MSK, Tribulus terrestris).
- Kidney, liver or prostate cancer concerns: ask your doctor before use.
- An erection lasting longer than four hours needs emergency care.
- Keep taking prescribed medicine, and tell your doctor about every supplement.
A sensible next step
If you worry about low testosterone, the way to know is a blood test ordered by a clinician, not a supplement. Start with our male sexual health basics.
Who wrote this01
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, FTC, NIDDK, AHA and peer-reviewed sources.
Last updated . See our editorial standards and how we check reviews. This website is run by Gostallionpower, a Stallion Power U.S. merchant desk, not by the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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