Tribulus terrestris
Tribulus Terrestris in Stallion Power: Does It Affect Testosterone?
Tribulus terrestris is a low-growing plant sold for libido and testosterone, and it is the eighth of nine lines in the Stallion Power blend. Trials used 400 to 750 mg a day, while one gummy holds 5 mg or less by our arithmetic. Tribulus testosterone gains are unproven, and results for erections are mixed.
Written by the Stallion Power label deskUpdated
The basics01
What is tribulus terrestris in Stallion Power?
Tribulus terrestris is a low-growing plant with spiny fruit. Supplements use the fruit or root, and sellers promote it for libido and testosterone.
The Stallion Power label lists Tribulus Terrestris eighth of nine lines in its 82 mg proprietary blend. No amount is printed.
The sales page names it as well, with no amount and no directions in text (Stallion Power sales page). The label is where we get our numbers.
| Name on the label | Tribulus Terrestris |
|---|---|
| What it is | A low-growing plant; the fruit and root are used |
| Where it appears | Place 8 of 9 in the 82 mg proprietary blend |
| Amount per gummy | Not listed; place 8 of 9, 5 mg or less |
| Amount used in research | 400-750 mg a day in trials |
| Strength of evidence | Mixed: some ED benefit in small trials; testosterone gains unproven |
| Marketed or traditional use | A plant fruit and root sold for testosterone and libido. One gummy holds 5 mg or less. |
| Main caution | Stomach upset; rare case reports of kidney, liver and priapism problems. |
The six-bottle picture is the brand's render of the largest pack. No photo of the plant was supplied.
The math02
How much tribulus is in one Stallion Power gummy?
At most 5 mg, by our arithmetic from the label order. That is a ceiling, not a lab result.
A blend lists its parts from most to least by weight (21 CFR 101.36 (proprietary blends)). Caffeine is printed as 5 mg and is listed fifth. Tribulus is listed eighth, so it cannot weigh more than the caffeine.
Caffeine, 5 mg
The only printed amount inside the blend.
Tribulus
Listed after caffeine, so 5 mg or less.
mg blend
Nine lines share it. Tribulus gets a small slice.
Dose vs research03
How does one gummy compare with tribulus doses in studies?
Trials used 400 to 750 mg a day (Vilar Neto 2025, tribulus review). One gummy holds 5 mg or less, so even the lowest studied dose is at least 80 times larger.
The studies also used standardized extracts, and the label does not say what kind of tribulus is in the gummy. Amount and type are both unknown.
The brass bar is the research range. The red bar is the most one gummy can hold. L-arginine, ashwagandha and caffeine are on the same chart.
Testosterone04
Does tribulus raise testosterone?
Not reliably. A 2025 review found that gains in testosterone from tribulus are unproven, and that evidence for erectile function is low (Vilar Neto 2025, tribulus review).
Memorial Sloan Kettering describes mixed results for both testosterone and erectile dysfunction (MSKCC, Tribulus terrestris). Some small trials saw a benefit, others did not.
So the common sales line, that tribulus lifts testosterone, is not something we can repeat as fact. Stallion Power does not claim it on the label either; the label says "Boost Performance†" and "Maximum Strength†", and the dagger points to the FDA statement.
Doctors diagnose it with repeated early-morning blood tests plus symptoms, not with a supplement (AUA, Testosterone deficiency guideline) (Endocrine Society 2018, testosterone therapy guideline). See testosterone and supplements.
The evidence05
What does the research on tribulus actually show?
It shows a plant with a long traditional history and a thin, mixed trial record. Nothing in it tests a 5 mg dose, and no trial has tested Stallion Power.
| Question | Finding | Source |
|---|---|---|
| Daily dose in trials | 400 to 750 mg | (Vilar Neto 2025, tribulus review) |
| Per gummy, Stallion Power | 5 mg or less (our arithmetic) | (21 CFR 101.36 (proprietary blends)) |
| Testosterone | Gains unproven | (Vilar Neto 2025, tribulus review) |
| Erectile function | Mixed; evidence low | (MSKCC, Tribulus terrestris) (Vilar Neto 2025, tribulus review) |
| Printed amount on the label | Not printed | Supplement Facts |
Reviews of ED supplement blends say the same thing about the whole category: most use amounts too small to match the research (Petre 2023, ED supplements review).
Stallion Power: from $49 a bottle30 gummies · 2, 3 or 6 bottles · free shipping on 3 or 6 · 60-day guarantee
See packsSafety06
Is tribulus safe, and who should be careful?
Stomach upset is the usual complaint. Rare case reports describe kidney or liver problems and a prolonged erection (MSKCC, Tribulus terrestris).
At 5 mg or less per gummy, the risk from this one ingredient looks small, though we cannot test that. The label asks anyone pregnant, nursing, taking medications or with a medical condition to consult a doctor first.
- Stop and call your doctor if a reaction occurs, as the label says
- An erection lasting more than four hours is an emergency (NHS, Priapism)
- Kidney or liver disease: ask before any herbal blend
- Nitrates or PDE5 drugs: ask first (MedlinePlus, Sildenafil)
A gummy does not replace a prescription. Tell your care team what you take (FDA, Mixing medications and supplements).
Next08
How does tribulus compare with maca in the same blend?
Both are plants sold for sexual vitality, and both have thin human evidence. Maca sits second in the blend, so it can hold more than tribulus. Its cap is about 38 mg.
Maca trials used grams, so it also falls far short (MSKCC, Maca) (Shin 2010, maca systematic review). Read maca root next, or return to all ingredients.
FAQ09
Tribulus in Stallion Power: common questions
How much tribulus is in Stallion Power?
The label does not print it. Tribulus is listed after the 5 mg caffeine, so it can weigh 5 mg at most per gummy, by our arithmetic from the label order. It could be less.
Does tribulus increase testosterone?
Not reliably. A 2025 review found testosterone gains from tribulus unproven (Vilar Neto 2025, tribulus review), and results elsewhere are mixed (MSKCC, Tribulus terrestris). Low testosterone is diagnosed by blood tests, not by supplements (AUA, Testosterone deficiency guideline).
What dose of tribulus did studies use?
Trials used 400 to 750 mg a day (Vilar Neto 2025, tribulus review). One Stallion Power gummy holds 5 mg or less, so the studied dose is at least 80 times higher than the most the gummy can contain.
Does tribulus help erectile dysfunction?
Some small trials saw a benefit, but the evidence is low and mixed (MSKCC, Tribulus terrestris) (Vilar Neto 2025, tribulus review). Nobody has tested Stallion Power. Persistent trouble can signal heart disease or diabetes, so see a doctor (Mayo Clinic, Erectile dysfunction).
Are there side effects from tribulus?
Stomach upset is the usual one. Rare case reports include kidney problems, liver problems and priapism (MSKCC, Tribulus terrestris). Stop and call your doctor if you have a reaction, as the Stallion Power label advises.
Is tribulus a steroid?
No. Tribulus is a plant, and it is not a steroid or a testosterone product. Sellers use the word testosterone in marketing, but the research does not support a testosterone gain from it (Vilar Neto 2025, tribulus review).
Can I take tribulus with Stallion Power?
We do not advise stacking. A separate tribulus capsule adds a gram-scale dose to an unknown base, and interactions are poorly studied. Ask your doctor or pharmacist first (FDA, Mixing medications and supplements).
Who wrote this10
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, CDC, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by Stallionpowermen, a USA stocking retailer for Stallion Power, not by the manufacturer or the distributor. We are paid a commission when you buy through our order links.
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