What is inside the bottle
HorseFil Ingredients: The Six Names on the Panel
HorseFil has six named ingredients: L-citrulline, L-carnitine, panax ginseng, maca root, rhodiola and grape seed extract.
They come in a 30-count gummy. Amounts are not listed on this site, so read the Supplement Facts panel on your bottle.
Next, see how to read your label.
The six, exactly as the brand lists them
This is the full active list, transcribed from the brand's ingredient panel. Nothing has been added, and nothing has been inferred.
| Ingredient as printed | What it is | Amount printed |
|---|---|---|
| L-Citrulline | An amino acid | None |
| L-Carnitine | An amino acid derivative | None |
| Panax Ginseng Extract | Asian ginseng root | None |
| Maca Root Extract | A Peruvian root | None |
| Rhodiola Extract | An adaptogen root | None |
| Grape Seed Extract | A polyphenol extract | None |
The same panel prints the strap 30 gummies · six named ingredients · dietary supplement. That is the complete quantitative content of the brand's ingredient artwork: one count, one number of names, and a category.
One by one
Each entry gives what the ingredient is, what the research body we cite actually found, and the caution that comes with it. Where a source says something unflattering, it is quoted rather than paraphrased into vagueness.
L-Citrulline (an amino acid)
Citrulline is the ingredient in this bottle with the most performance research behind it, and the research is not flattering. The NIH Office of Dietary Supplements is direct: "The research to support supplemental citrulline as an ergogenic aid is limited and conflicting at best," and it concludes that the evidence "does not provide strong support for taking citrulline or citrulline malate to enhance exercise or athletic performance." It also notes that studies have not properly assessed the safety of taking it in supplement form for months at a time. Office of Dietary Supplements, Dietary Supplements for Exercise and Athletic Performance: Health Professional Fact Sheet (2026).
| Amount in HorseFil | Typical amount in published work | Caution |
|---|---|---|
| Not published | Trials of citrulline or citrulline malate usually run 3-8 g a day, taken before exercise. | Long-term safety has not been well studied. If you take blood pressure medicine, raise it with your clinician before starting, because citrulline is studied for its effect on blood vessels. |
L-Carnitine (an amino acid derivative)
This is the ingredient whose presence is hardest to justify on paper, and we would rather say so. The NIH Office of Dietary Supplements states plainly that "healthy children and adults do not need to consume carnitine from food or supplements because the liver and kidneys synthesize sufficient amounts to meet daily needs." On performance it reports that the evidence "is mixed, and additional investigations are needed." Office of Dietary Supplements, Carnitine: Health Professional Fact Sheet (2026).
| Amount in HorseFil | Typical amount in published work | Caution |
|---|---|---|
| Not published | Supplement trials commonly use 1-3 g a day. | NIH notes that around 3 g a day can cause nausea, vomiting, abdominal cramps, diarrhoea and a fishy body odour, and that gut bacteria may convert carnitine into compounds that might raise cardiovascular risk. |
Panax Ginseng Extract (Panax ginseng)
Panax ginseng has the deepest research file of the six. NCCIH describes the picture as mixed, with most trials small and short, and notes possible modest effects on fatigue, cognition and sexual dysfunction. On the athletic side the NIH Office of Dietary Supplements found that ginseng "had no ergogenic effect on such measures as peak power output, time to exhaustion, perceived exertion, recovery from intense activity, oxygen consumption, or heart rate." NCCIH, Asian Ginseng: Usefulness and Safety (2026).
| Amount in HorseFil | Typical amount in published work | Caution |
|---|---|---|
| Not published | Most trials use 200-400 mg a day of a standardised root extract. | NCCIH says short-term use up to six months appears safe for most people, that insomnia is the most common complaint, and that ginseng can interact with medicines. |
Maca Root Extract (Lepidium meyenii)
Maca is the ingredient most people recognise from men's formulas. Memorial Sloan Kettering's monograph is careful with it: "Only a few small trials have been conducted in humans," with mixed results, and systematic reviews describe the evidence for sexual dysfunction and menopausal symptoms as limited. Note the dose gap in particular here: maca trials use grams of root powder, and a gummy cannot physically hold that much of anything. Memorial Sloan Kettering Cancer Center, Maca (2026).
| Amount in HorseFil | Typical amount in published work | Caution |
|---|---|---|
| Not published | Human trials typically use 1.5-3 g a day of dried root powder. | MSK warns that maca may interfere with testosterone immunoassays, which matters if you are about to have bloods taken, and advises anyone with a hormone-sensitive condition to speak to their physician first. |
Rhodiola Extract (Rhodiola rosea)
Rhodiola is the adaptogen in the formula, and it is the one where we have to report an outright absence of evidence. NCCIH states: "There isn't enough reliable evidence to determine whether rhodiola or its components are useful for any health-related purpose." That is a stronger negative than "more research is needed" and it belongs on this page rather than in a footnote. NCCIH, Rhodiola: Usefulness and Safety (2026).
| Amount in HorseFil | Typical amount in published work | Caution |
|---|---|---|
| Not published | Trials generally use 200-600 mg a day of a standardised extract. | NCCIH describes rhodiola as possibly safe for up to 12 weeks, with dizziness, headache and insomnia among reported side effects. Safety in pregnancy and breastfeeding is not established. |
Grape Seed Extract (Vitis vinifera)
Grape seed is the odd one out in a vitality formula: its research base is cardiovascular rather than athletic. Memorial Sloan Kettering reports preliminary findings that grape seed extract "can reduce LDL, increase total serum antioxidant activity", with possible benefit for some cardiac patients, while noting that trials in other areas have been limited. Nothing in that file is about energy or performance. Memorial Sloan Kettering Cancer Center, Grape Seed (2026).
| Amount in HorseFil | Typical amount in published work | Caution |
|---|---|---|
| Not published | Trials commonly use 100-300 mg a day of a standardised extract. | MSK cautions that grape seed extract "may increase your risk of bleeding" and that anyone on a blood thinner should speak to their clinician first. |
Why the order tells you nothing here
On a capsule with a proprietary blend, the ingredient order is worth reading: FDA rules require the contents of a blend to be listed in descending order of weight, so position one is the heaviest. That single rule is often the only quantitative information such a label gives away.
It does not apply to what we have. The six names on the HorseFil panel are arranged around a photograph of the bottle for design reasons, three on the left and three on the right. That is artwork, not a regulated ingredient statement, so their positions carry no meaning at all.
Which means the usual trick does not work
With a blend total you can at least divide and get a ceiling. Here there is no total to divide, no order to read and no serving size to multiply. Every route an experienced label-reader would normally take is closed.
What a gummy can physically hold
This is worth doing carefully, because it is the one piece of analysis available without the panel.
A typical supplement gummy weighs somewhere around 2.5 to 4 grams. Most of that mass is structural: the gelling agent, the sweetener, water, citric acid, flavour and colour. What is left for active ingredients is usually a few hundred milligrams at most, and often far less.
| Ingredient | Studied at | Room in a gummy |
|---|---|---|
| L-Citrulline | 3-8 g a day | No. That is more than the whole gummy weighs |
| L-Carnitine | 1-3 g a day | No, not alongside five other ingredients |
| Maca root | 1.5-3 g a day of root powder | No |
| Panax ginseng | 200-400 mg a day | Possible, if it took most of the active space |
| Rhodiola | 200-600 mg a day | Possible at the low end, if it took most of the active space |
| Grape seed | 100-300 mg a day | Possible |
Three of the six cannot be at trial dose in this format, and that is not a criticism of HorseFil specifically — it is true of every gummy that lists citrulline or maca. It is a criticism of not saying so.
What the label does not tell you
- Any amount, for any of the six ingredients.
- The serving size — how many gummies make a day.
- Extract ratios or standardisation for the four botanicals.
- Sugar, calories and total carbohydrate per serving.
- The gummy base: gelatin or pectin.
- Flavour and colour sources.
- Whether there are inactive ingredients beyond the gummy base, and what they are.
Seven gaps, and the first two are the ones that matter most. Our full running list is on the about page, and a single photograph of the Supplement Facts panel would close most of it.
Ingredient questions
How many ingredients does HorseFil have?
Six are named on the brand's panel. Whether there are inactive ingredients beyond the gummy base is not published.
How much L-citrulline is in HorseFil?
Not published. Citrulline trials use 3-8 g a day, which is more than a single gummy weighs, so it will not be at trial dose here.
Does HorseFil contain caffeine?
Nothing on the brand's ingredient panel is a stimulant, and caffeine is not among the six named ingredients.
Is HorseFil vegetarian?
There is a vegetarian seal on the brand's seal set, which would imply a pectin base rather than gelatin. The base itself is not printed on anything we hold.
Are the botanicals standardised extracts?
The panel says "extract" after four of the names and gives no ratio or percentage, so there is no way to compare strength with a studied extract.
Can I take HorseFil with other supplements?
Ask a pharmacist, particularly if anything else you take affects bleeding or blood pressure. Grape seed extract is the ingredient that makes stacking a real question.
References
- Office of Dietary Supplements, National Institutes of Health (2026). Dietary Supplements for Exercise and Athletic Performance: Health Professional Fact Sheet.
- Office of Dietary Supplements, National Institutes of Health (2026). Carnitine: Health Professional Fact Sheet.
- NCCIH, National Institutes of Health (2026). Asian Ginseng: Usefulness and Safety.
- Memorial Sloan Kettering Cancer Center, About Herbs (2026). Maca.
- NCCIH, National Institutes of Health (2026). Rhodiola: Usefulness and Safety.
- Memorial Sloan Kettering Cancer Center, About Herbs (2026). Grape Seed.
Six names you can look up
Every source on this page is linked. Read them before you decide, not after.
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