HorseFil Ingredients: All Six, With The Real Evidence
Six named ingredients. Two have meta-analyses. One of those meta-analyses found nothing. None has a published amount.
HorseFil names six ingredients on the seller's own product panel: L-citrulline, L-carnitine, Panax ginseng extract, maca root extract, rhodiola extract and grape seed extract. No amount is published for any of them. The doses used in the research range from 100 mg a day for rhodiola to 8 g a day for citrulline, and a whole gummy weighs about 2.5 g.
The full HorseFil ingredient list
Sorted the way the seller's panel lists them, with the researched dose beside each one. That last column is the one to read.
| Ingredient | Amount in HorseFil | Dose used in the research | Our verdict |
|---|---|---|---|
| L-Citrulline an amino acid | Not published | 8 g a day | Real research, mostly negative, at a dose no gummy can carry. |
| L-Carnitine an amino acid derivative | Not published | 1 to 4 g a day | Plausible for recovery. The gram doses do not fit a gummy either. |
| Panax Ginseng Extract Panax ginseng C.A. Meyer | Not published | 1 to 2 g a day | The strongest ingredient on the label, and the dose is still grams. |
| Maca Root Extract Lepidium meyenii | Not published | 1.5 to 3.5 g a day | Limited evidence for desire, none we could verify for energy. |
| Rhodiola Extract Rhodiola rosea | Not published | 100 to 576 mg a day | Weak, conflicting evidence — but a dose that could physically fit. |
| Grape Seed Extract Vitis vinifera | Not published | 150 to 1,400 mg a day | Genuine vascular data. Nothing about energy. A dose that can fit. |
Scroll this table sideways →
Why every amount says the same thing
No Supplement Facts panel appears in anything supplied to this website. The six names come from a marketing panel headed INSIDE HORSEFIL, which carries names and no numbers. That is not an oversight on our part: the amounts have never been published, so nobody outside the company can check them.
Where these six names came from
This is worth explaining, because the two sources we were given contradict each other and we followed the one with more information in it.
The written brief supplied with this build says, word for word: "None named on the sales page we checked. Do not invent a list." We have not invented anything. The same delivery included a product panel, headed INSIDE HORSEFIL, which names six ingredients in large gold type with a photograph beside each one, and prints SIX NAMED INGREDIENTS along the bottom.
So the names are the seller's own, published by the seller, on the seller's own artwork. What they are not is a Supplement Facts panel. A marketing panel names things; a Supplement Facts panel quantifies them. Only one of those is a regulated disclosure, and this product has the other one.
The two with the strongest human evidence
Panax ginseng extract
The best ingredient on this label for the claim the label actually makes. In a randomised, double-blind, placebo-controlled trial, 90 adults with chronic fatigue took 1 g or 2 g a day for four weeks and reported less mental fatigue than placebo. A separate systematic review found ginseng promising for fatigue in chronic illness. A third review, of trials in 349 men, found red ginseng beat placebo for erectile dysfunction, though it noted the trials were of low quality.
Strong evidence · 1 to 2 g a day · Kim et al., 2013
Grape seed extract
Sixteen randomised trials covering 810 people found grape seed extract lowered systolic blood pressure by about 6 mmHg and diastolic by about 2.8 mmHg. A second meta-analysis of grape polyphenols found a much smaller effect, about 1.5 mmHg, and no diastolic change. So the direction is consistent and the size is disputed. Note that none of this is about energy.
Strong evidence · 150 to 1,400 mg a day · Zhang et al., 2016
Both of those are real findings from real trials, and both are reasons to take the formula seriously. Ginseng in particular is the ingredient we would point to if someone asked what this product has going for it.
The one whose best evidence works against the claim
L-Citrulline
Citrulline is the ingredient most men in this category are actually buying. The mechanism is genuine and well understood: citrulline raises blood arginine, the body makes nitric oxide from arginine, and nitric oxide relaxes blood vessels. It is the same pathway that prescription ED medicines act on from a different direction, which is exactly why it sells.
Then you read the outcome data. A 2022 systematic review and meta-analysis pooled ten studies covering 173 people and found no meaningful benefit for aerobic exercise performance (Viribay et al., 2022). A 2021 critical review of citrulline malate and performance found the results mixed and unclear (Gough et al., 2021). And the NIH's own fact sheet for health professionals says, in plain words, that the research to date does not provide strong support for taking citrulline to enhance exercise or athletic performance (NIH Office of Dietary Supplements).
That is the honest position on the headline ingredient of a product sold for performance. It is not nothing — citrulline does what it says physiologically — but the trials looking for a result mostly did not find one.
And then there is the dose. Nearly every one of those trials used 8 g of citrulline malate. A whole gummy weighs about 2.5 g. There is no version of this product that contains a researched citrulline dose, and that conclusion holds even if you assume a much larger gummy.
The three with thinner support
L-Carnitine
Carnitine's job in the body is real and specific: it shuttles long-chain fatty acids into the mitochondria to be burned. That is where every "cellular energy" claim in this category comes from. In practice the human research is about exercise recovery rather than about feeling energetic. A 2018 review in Nutrients found it may reduce muscle soreness and markers of muscle damage after exercise (Fielding et al., 2018). It was a narrative review rather than a meta-analysis, and some of its authors had industry ties, which is worth knowing. The studies used 1 to 4 g a day for two to twenty-four weeks.
Maca root extract
Maca is the traditional Peruvian root that turns up in almost every men's formula. A systematic review of four randomised trials covering 131 people found only limited evidence that it improves sexual function (Shin et al., 2010). For energy or mood specifically, which is closer to what this label claims, we could not verify a single reliable human trial. The trials used 1.5 to 3.5 g a day, which is another gram-scale dose.
Rhodiola extract
Rhodiola is the adaptogen, taken for physical and mental fatigue under stress. A review of eleven human trials covering 446 people found the results conflicted with each other and that every single included study carried a high risk of bias (Ishaque et al., 2012). The NIH's exercise performance fact sheet does not cover rhodiola at all.
Rhodiola is also the one bright spot on the format question. Its trials used 100 to 576 mg a day, which fits in a gummy without any difficulty. Weak evidence at a dose that fits is a different problem from strong evidence at a dose that cannot.
Six named, none quantified
Six ingredients are named. Not one amount is disclosed, so not one of them can be checked against the dose used in the research. On a gummy that gap matters more than usual, because the format itself limits how much can be in there at all.
That is the shape of the whole formula: six sensible names, zero numbers. If a Supplement Facts panel is published, this page changes the same week and the updated date at the top moves forward.
What is not in HorseFil
- No testosterone, no hormone and no steroid of any kind.
- No prescription ingredient. Nothing here is sildenafil or tadalafil, and any product in this category that behaves as if it were should be treated with suspicion (U.S. Food and Drug Administration).
- No stimulant is named. There is no caffeine on the list of six.
- No zinc, no vitamin D, no magnesium and no B12 — all of which are common in men's formulas, all of which are dosed in milligrams or micrograms, and all of which would have suited a gummy better than citrulline does.
- No allergen statement was supplied to us, and no Other Ingredients line. If you have a serious allergy, call +1 (302) 200-3480 before you order.
Ingredient questions
What is in HorseFil?
Six ingredients, named on the seller's own INSIDE HORSEFIL panel: L-citrulline, L-carnitine, Panax ginseng extract, maca root extract, rhodiola extract and grape seed extract.
How much of each ingredient is in it?
Not published. There is no Supplement Facts panel in anything we were given, and not one milligram figure appears anywhere. That matters more here than in most products, because three of the six ingredients have researched doses measured in grams, and a whole gummy weighs about 2.5 grams including its sugar.
How many gummies is a serving?
Not published. The seller's instruction panel says only "follow the directions printed on the product label", which is not a serving size. Because no serving size exists, nobody can say how long a 30-gummy bottle lasts.
Is it vegetarian?
The seller prints a vegetarian mark. None of the six named ingredients is meat or fish. But most gummies gel with gelatin, which is not vegetarian, and the gelling agent has not been disclosed. If this matters to you, call the desk before you order.
Can I take it with my medication?
Ask a doctor first and take the bottle with you. Ginseng interacts with blood thinners and with diabetes medicine. Citrulline and grape seed both affect blood pressure.
What are the side effects?
No side-effect list was published for this product. Based on the named ingredients: citrulline can cause stomach upset and lowers blood pressure, ginseng can cause headaches and sleeplessness, carnitine can cause nausea and a fishy body odour, and grape seed also lowers blood pressure.
References
Every source linked here was opened and checked.
- Gough et al. — 2021. A critical review of citrulline malate supplementation and exercise performance. European Journal of Applied Physiology · PMID 34417881.
- Viribay et al. — 2022. Effects of Citrulline Supplementation on Different Aerobic Exercise Performance Outcomes: A Systematic Review and Meta-Analysis. Nutrients · PMID 36079738.
- Fielding et al. — 2018. L-Carnitine Supplementation in Recovery after Exercise. Nutrients · PMID 29534031.
- Arring et al. — 2018. Ginseng as a Treatment for Fatigue: A Systematic Review. The Journal of Alternative and Complementary Medicine · PMID 29624410.
- Kim et al. — 2013. Antifatigue Effects of Panax ginseng C.A. Meyer: A Randomised, Double-Blind, Placebo-Controlled Trial. PLOS ONE · PMID 23613825.
- Jang et al. — 2008. Red ginseng for treating erectile dysfunction: a systematic review. British Journal of Clinical Pharmacology · PMID 18754850.
- Shin et al. — 2010. Maca (L. meyenii) for improving sexual function: a systematic review. BMC Complementary and Alternative Medicine · PMID 20691074.
- Ishaque et al. — 2012. Rhodiola rosea for physical and mental fatigue: a systematic review. BMC Complementary and Alternative Medicine · PMID 22643043.
- Zhang et al. — 2016. The impact of grape seed extract treatment on blood pressure changes: A meta-analysis of 16 randomized controlled trials. Medicine (Baltimore) · PMID 27537554.
- Li et al. — 2015. Effect of Grape Polyphenols on Blood Pressure: A Meta-Analysis of Randomized Controlled Trials. PLOS ONE · DOI 10.1371/journal.pone.0137665.
- Adeleke & Abedin — 2024. Characterization of Prototype Gummy Formulations Provides Insight into Setting Quality Standards. AAPS PharmSciTech · DOI 10.1208/s12249-024-02876-w.
- U.S. Food and Drug Administration. Questions and Answers on Dietary Supplements. FDA.gov.
- U.S. Food and Drug Administration. FDA Calls on Certain Firms to Stop Producing and Issuing Misleading 'FDA Registration Certificates'. FDA.gov.
- U.S. Food and Drug Administration. Tainted Sexual Enhancement and Energy Products. FDA.gov.
- NIH Office of Dietary Supplements. Dietary Supplements for Exercise and Athletic Performance. ods.od.nih.gov.
Order HorseFil from the official website
Thirty gummies, six named ingredients, sixty days to change your mind. Start with one bottle so you can see the serving size and the price before you commit.
60-day money-back guarantee · ships from the United States · questions on +1 (302) 200-3480