Ingredient
L-Arginine in Stallion Power: Line 7 of 9, Dose and Evidence
L-arginine is the seventh ingredient in the Stallion Power blend. The label gives no amount, but it cannot weigh more than the printed 5 mg of caffeine. Erectile-dysfunction trials used about 3,000 to 5,000 mg a day, and one review found 3 g or less generally ineffective.
Written by the Stallion Power label deskUpdated
The ingredient01
L-arginine on the Stallion Power label
L-arginine is the seventh of nine lines. It is the one amino acid in the blend.
The label reads “L-Arginine” and gives no separate amount. Only caffeine has its own printed weight, at 5 mg (Stallion Power sales page). Because arginine is listed after caffeine, it cannot weigh more than caffeine does.
| Name on the label | L-Arginine |
|---|---|
| What it is | Amino acid |
| Place on the label | 7 of 9 in the 82 mg proprietary blend |
| Amount per gummy | Not listed; line 7 of 9 in the 82 mg blend: at most 11.7 mg by the plain rule, and at most 5 mg when the printed 5 mg of caffeine is used |
| Amount used in research | 3,000-5,000 mg a day in erectile-dysfunction trials; 3 g or less was generally ineffective in one review |
| Strength of evidence | Small, pilot-level trials; not proof of efficacy |
| Marketed or traditional use | Amino acid used for circulation and nitric oxide |
| Main caution | May lower blood pressure; asks for care with blood pressure medicines; may add to nitrates and ED medicines. |
No study we found tested the finished gummy. What follows is about arginine on its own.
The label arithmetic02
How much L-arginine can one gummy hold?
US rules list the ingredients of a proprietary blend from most to least by weight (21 CFR 101.36, Supplement Facts). Divide 82 mg by seven and the plain ceiling for place seven is 11.71 mg. The label prints caffeine at 5 mg in place five, and every later line must weigh no more than that. So the tighter ceiling is 5 mg.
Line 7, L-arginine, can hold at most 5 mg of the 82 mg once caffeine's printed 5 mg is used (11.71 mg by the plain rule).
Red: the tighter ceiling. Brass: the extra room the plain rule would allow. Dark: the rest of the 82 mg. The label gives the 82 mg total, the order and caffeine's 5 mg (21 CFR 101.36, Supplement Facts); a line cannot weigh more than the lines listed before it. It is arithmetic on the label, not a lab result.
These are ceilings, not contents. The sums assume the label follows the descending-order rule. They are arithmetic on a printed label, not a lab result, and a real gummy can hold less.
Against the research03
Grams in the trials, milligrams in the gummy
A review found 14 human trials of L-arginine for erectile dysfunction, alone or with other agents. The review says 3 g a day or less was generally ineffective, 1.5 g a day was ineffective, and one study used 5 g a day for six weeks (Koolwal 2019, L-arginine and ED). The authors call the trials pilot research, not full proof of efficacy.
| Item | L-arginine per day | Gummies at the 5 mg ceiling |
|---|---|---|
| Generally ineffective in the review | 3,000 mg or less | Would take 600 or more (Koolwal 2019, L-arginine and ED) |
| Study dose, six weeks | 5,000 mg | Would take 1,000 (Koolwal 2019, L-arginine and ED) |
| Stallion Power, one gummy | At most 5 mg (11.71 mg plain) | 1 gummy, the labeled serving (21 CFR 101.36, Supplement Facts) |
One gummy a day sits hundreds of times below the trial doses, so those trials cannot describe this product.
Strength of the evidence04
How strong is the evidence?
Modest, though it is the better-studied line here. A review of aphrodisiac ingredients says L-arginine is a safe supplement with clinical data supporting improved erectile function, and that these supplements remain poorly studied overall (Srivatsav 2020, Aphrodisiac ingredients review). A 2019 narrative review calls the trials pilot-level (Koolwal 2019, L-arginine and ED). Both concern studied doses, not a blend.
What the record offers
- 14 human trials to date.
- Generally well tolerated up to 9 g a day (Koolwal 2019, L-arginine and ED).
What the record lacks
- Large, rigorous trials.
- Benefit at 3 g a day or less.
- Any trial of the finished gummy.
The claims versus evidence page weighs the sales page wording on blood circulation.
Stallion Power: from $49 a bottle30 gummies a bottle · 2, 3 or 6 bottles · free shipping on 3 or 6 · 60-day guarantee
See packsSafety05
Blood pressure, hearts and medicines
Arginine could lower blood pressure for a time, so additive effects with blood pressure medicines are possible (MSK, Arginine). Memorial Sloan Kettering also warns that in people who had an acute heart attack, arginine may raise the risk of death, and that long-term use may worsen peripheral artery disease (MSK, Arginine).
Never combine sildenafil with nitrate medicines for chest pain (MedlinePlus, Sildenafil). If you take either kind, a blood pressure medicine, or have heart disease, ask your doctor or pharmacist before using Stallion Power. Keep taking your prescribed medicine.
- Stop and call your doctor if any adverse reaction occurs.
- Seek emergency care for chest pain, fainting, or an erection lasting over four hours (MedlinePlus, Sildenafil).
- The 5 mg ceiling is small, but the label gives no actual amount.
See the supplements and medications guide and the side effects page.
The plain verdict06
What this means if you are deciding to buy
L-arginine has the most trial research of the six ingredients on their own pages, and the gummy cannot hold anything close to the amounts studied. Treat it as a minor line with a large caution label for anyone who takes heart or blood pressure medicine.
If you try the product, follow the label: one gummy once daily, or as directed by a qualified health care professional. The sales page offers a “60-Day Money-Back Guarantee”; the guarantee page lists its terms. Packs are $49 to $79 a bottle on the pricing page.
Order Stallion PowerWe earn money when you order through our links. That does not change what the research says.
FAQ07
Stallion Power questions people ask
What does L-arginine do in the body?
It is an amino acid, a building block of protein. Sellers say the body uses it to make nitric oxide, which relaxes blood vessels. We did not find that mechanism in the sources we read, so treat it as a sales explanation. Memorial Sloan Kettering lists erectile dysfunction only as a purported use (MSK, Arginine).
Can L-arginine improve blood flow?
The sources we read do not show that a supplement does so. A review found 14 small human trials for erectile dysfunction and called them pilot research, not proof of efficacy (Koolwal 2019, L-arginine and ED). Those trials used grams a day, far above the gummy's ceiling.
Is it safe to combine L-arginine with sildenafil?
Ask a doctor or pharmacist first. Both can lower blood pressure, and MedlinePlus says sildenafil must never be taken with nitrate medicines (MedlinePlus, Sildenafil). Memorial Sloan Kettering says arginine could lower blood pressure and add to blood pressure medicines (MSK, Arginine). Keep taking prescribed medicine.
Does L-arginine lower blood pressure?
It might, a little. Memorial Sloan Kettering says arginine temporarily lowered blood pressure in a small study of people with diabetes (MSK, Arginine). A review reports a possible small, non-significant drop (Koolwal 2019, L-arginine and ED). People on blood pressure medicine should ask their provider.
Can L-arginine cause stomach upset?
Yes. Memorial Sloan Kettering lists abdominal pain, bloating, nausea and diarrhea (MSK, Arginine). The review reports nausea or vomiting in about 3 percent of users at trial doses (Koolwal 2019, L-arginine and ED). Those doses were far above what one gummy can hold.
Is the L-arginine in a gummy enough to matter?
Probably not by the trial standard. The gummy can hold at most 5 mg by our arithmetic, and trials used 3,000 to 5,000 mg. This is a ceiling on a printed label, not a lab result, and a real gummy can hold less (21 CFR 101.36, Supplement Facts).
Who wrote this08
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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