Ingredient
Horny Goat Weed in Stallion Power: Line 9 of 9, the Evidence
Horny goat weed extract is the ninth and last ingredient in the Stallion Power blend. The label gives no amount, but it cannot weigh more than the 5 mg of caffeine printed above it. The sources we read say there are no clinical studies to support a dose, and the sexual-use evidence is from rats and lab work.
Written by the Stallion Power label deskUpdated
The ingredient01
Horny goat weed on the Stallion Power label
Horny goat weed is the last of nine lines. Under the rules for blends, last place means the smallest weight.
The label reads “Horny Goat Weed Extract” and gives no separate amount. It does not say how much icariin the extract holds or how it was made. Only caffeine has its own printed weight, at 5 mg (Stallion Power sales page).
| Name on the label | Horny Goat Weed Extract |
|---|---|
| What it is | Epimedium, a Chinese herb with icariin |
| Place on the label | 9 of 9 in the 82 mg proprietary blend |
| Amount per gummy | Not listed; line 9 of 9 in the 82 mg blend: at most 9.1 mg by the plain rule, and at most 5 mg when the printed 5 mg of caffeine is used |
| Amount used in research | No clinical studies to support a dose |
| Strength of evidence | Evidence for sexual use is from rat and lab studies |
| Marketed or traditional use | Traditional Chinese herb sold for libido |
| Main caution | Sweating, a fast irregular heartbeat and mood changes at high doses; case reports in men with heart disease; avoid in pregnancy. |
No study we found tested the finished gummy. What follows is about the herb on its own.
The label arithmetic02
How much horny goat weed 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 nine lines and the plain ceiling for the ninth is 9.11 mg. The label prints caffeine at 5 mg in place five, and every later line must weigh no more than caffeine. So horny goat weed holds at most 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. At 5 mg or less, this line is a small slice of an 82 mg blend.
Against the research03
What the research shows
Drugs.com says clinical trial data are lacking for the traditional aphrodisiac use, and that no clinical studies support a dose. For erectile dysfunction, the support is from rat and in vitro work (Drugs.com, Horny goat weed). Memorial Sloan Kettering says more studies are needed and that many trials combine horny goat weed with other herbs, so its own part is unclear (MSK, Epimedium (horny goat weed)).
| Question | Answer from the sources |
|---|---|
| Human trials of the herb alone | Clinical trial data are lacking (Drugs.com, Horny goat weed) |
| Source of the sexual-use evidence | Rat and in vitro studies (Drugs.com, Horny goat weed) |
| A studied or safe dose | None set; toxicity and safety evaluations are lacking (MSK, Epimedium (horny goat weed)) (Drugs.com, Horny goat weed) |
| Stallion Power ceiling | At most 9.11 mg plain, 5 mg tighter (21 CFR 101.36, Supplement Facts) |
With no dose in people, there is no studied amount to set beside the gummy. Do not read the small ceiling as safe or unsafe. It only means the label allows little.
Strength of the evidence04
How strong is the evidence?
Very weak for the use on the bottle. The evidence is animal and lab based, and the human reports are case reports of harm, not trials of benefit (Drugs.com, Horny goat weed).
What the record offers
- A long traditional use in Chinese herbal formulas (MSK, Epimedium (horny goat weed)).
- Lab and rat studies that suggest ideas to test.
What the record lacks
- Human trials of the herb alone.
- A supported dose.
- Any trial of the finished gummy.
The sales page uses the phrase “Promote healthy blood circulation to support cardiovascular function”. Neither source we read links horny goat weed to blood circulation or blood pressure. Memorial Sloan Kettering does not mention blood pressure effects at all (MSK, Epimedium (horny goat weed)). The claims versus evidence page weighs the wording.
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
Cautions with horny goat weed
Memorial Sloan Kettering lists sweating or feeling hot at high doses, a rapid irregular heartbeat, more energy and mood changes. It describes a 66-year-old man with heart failure who developed breathlessness, chest pain and a new heart rhythm problem after two weeks of daily use (MSK, Epimedium (horny goat weed)). Drugs.com reports a similar case in an elderly patient with a cardiac history (Drugs.com, Horny goat weed).
Memorial Sloan Kettering says not to take horny goat weed if you have heart disease (MSK, Epimedium (horny goat weed)). Ask your cardiologist or pharmacist before using Stallion Power. A 5 mg ceiling is small, but the label gives no actual amount.
- Pregnant or nursing: avoid it, per Drugs.com (Drugs.com, Horny goat weed).
- Keep taking prescribed medicine as directed.
- 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).
See the side effects page and supplements and medications.
The plain verdict06
What this means if you are deciding to buy
Horny goat weed has the loudest name in the blend and a thin record, and the label allows it only a small share. Do not expect it to carry the gummy. If you have a heart condition, make it the first thing you ask your doctor about.
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 is horny goat weed?
Horny goat weed is the common name of Epimedium, a traditional Chinese herb also sold for libido. The label lists “Horny Goat Weed Extract” as the ninth and last line of the blend (MSK, Epimedium (horny goat weed)). It is a herb with a long folk use, not a medicine.
Is icariin the active compound in horny goat weed?
Icariin is the compound most often named in the herb. Memorial Sloan Kettering mentions it only to warn that icariin may have estrogenic effects (MSK, Epimedium (horny goat weed)). The label does not state an icariin amount, and the sources we read do not say which compound does what, so we cannot confirm an active compound.
Does horny goat weed help erectile dysfunction?
That has not been shown in people. Drugs.com says clinical trial data are lacking and that the support for erectile dysfunction comes from rat and test-tube studies (Drugs.com, Horny goat weed). Memorial Sloan Kettering adds that many trials mix it with other herbs (MSK, Epimedium (horny goat weed)).
Can horny goat weed cause dizziness or nosebleeds?
The two sources we read do not list those. They list sweating or feeling hot at high doses, a rapid irregular heartbeat, more energy and mood changes (MSK, Epimedium (horny goat weed)). Other sources may differ. If you feel dizzy or faint, stop and call your doctor.
Why does a label say epimedium instead of horny goat weed?
Epimedium is the plant's botanical name and horny goat weed is its common name. Memorial Sloan Kettering titles its page with both (MSK, Epimedium (horny goat weed)). The Stallion Power label uses the common name, so the words refer to the same herb.
Who should avoid horny goat weed?
Memorial Sloan Kettering says not to take it if you have heart disease or are sensitive to Epimedium, and to be careful with hormone-sensitive cancers (MSK, Epimedium (horny goat weed)). Drugs.com advises avoiding it in pregnancy and nursing (Drugs.com, Horny goat weed). Ask your doctor if you take any medicine.
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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