HorseFil Ingredients: The Six Names on the Label, and What Research Says
HorseFil names six ingredients: L-citrulline, L-carnitine, Panax ginseng, maca root, rhodiola and grape seed extract. The label does not print a milligram amount for any of them. Research on several of these ingredients used gram-level doses, more than a small gummy can hold. Rhodiola and grape seed extract, studied at a few hundred milligrams a day, are the ingredients that fit a gummy best.
What are the six ingredients in HorseFil?
These six names come from the listing panel and the sales page. No brand or third-party lab is named next to any of them.
| Ingredient | Kind | Why it is here |
|---|---|---|
| L-Citrulline | Amino acid | An amino acid found in watermelon. The body turns it into arginine, which helps make nitric oxide for blood flow. |
| L-Carnitine | Amino acid compound | A compound that moves fatty acids into cells to be burned for energy. |
| Panax Ginseng Extract | Root | Asian (Korean) ginseng root, one of the most studied herbs for fatigue. |
| Maca Root Extract | Root | A Peruvian root vegetable used for energy and vitality. |
| Rhodiola Extract | Root | A cold-climate herb studied for stress-related fatigue. |
| Grape Seed Extract | Seed | A source of plant compounds called proanthocyanidins, studied for blood pressure and circulation. |
How do the six ingredients line up on the label?
Tap a number on the panel, or a name in the tab row below, to see the research dose, the evidence level and a safety note for that ingredient.
- 1. L-CitrullineAn amino acid the body turns into arginine for nitric oxide. Studied at 1.5 to 8 grams a day.
- 2. L-CarnitineHelps move fats into cells for energy. Studied at 1 to 4 grams a day.
- 3. Panax GinsengAsian ginseng root. Fatigue research used about 200 mg to 3 grams a day.
- 4. Maca RootA Peruvian root. Trials used 1.5 to 3.5 grams a day of dried root.
- 5. RhodiolaA stress-fatigue herb. The main trial used 576 mg a day.
- 6. Grape SeedProanthocyanidins studied for blood pressure at about 100 to 300 mg a day.
- 7. One gummy30 gummies, six named ingredients, one a day. No amount is printed for any of them.
L-Citrulline
amino acid
An amino acid found in watermelon. The body turns it into arginine, which helps make nitric oxide for blood flow. Human trials are small and mixed, and a 2018 meta-analysis found no significant average blood-pressure effect.
- In HorseFil
- Not published
- Dose used in research
- 1.5-8 g/day
- Safety note
- L-citrulline raises nitric oxide and can modestly affect blood vessel tone, so it should be used cautiously alongside blood pressure medications, nitrate drugs, or PDE5 inhibitors like sildenafil (Viagra) or tadalafil (Cialis).
- Sources
- Cormio et al., 2011 · Wang et al., 2026
L-Carnitine
amino acid compound
A compound that moves fatty acids into cells to be burned for energy. Positive results come mostly from small or specific-population trials, such as centenarians with baseline fatigue.
- In HorseFil
- Not published
- Dose used in research
- 1-4 g/day
- Safety note
- Gut bacteria convert L-carnitine into TMAO, a compound some research links to increased cardiovascular risk (per NIH's Office of Dietary Supplements).
Panax Ginseng Extract
Panax ginseng · root
Asian (Korean) ginseng root, one of the most studied herbs for fatigue. Systematic reviews describe the evidence for fatigue and erectile function as modest or suggestive but not conclusive, due to small and lower-quality trials.
- In HorseFil
- Not published
- Dose used in research
- roughly 600 mg-3 g/day of standardized ginseng extract, often taken for several weeks
- Safety note
- Asian/Panax ginseng may lower blood sugar levels, so people on diabetes medication should use it cautiously.
- Sources
- Arring et al., 2018 · Jang et al., 2008
Maca Root Extract
Lepidium meyenii · root
A Peruvian root vegetable used for energy and vitality. Systematic reviews find only limited, low-quality trial evidence for sexual function and libido benefits.
- In HorseFil
- Not published
- Dose used in research
- 1.5-3.5 g/day of dried maca root powder, typically for 6-12 weeks
- Safety note
- Maca root has limited long-term human safety data.
- Sources
- Shin et al., 2010 · Lee et al., 2023
Rhodiola Extract
Rhodiola rosea · root
A cold-climate herb studied for stress-related fatigue. Effects on fatigue and endurance are supported mainly by small trials and a few recent meta-analyses.
- In HorseFil
- Not published
- Dose used in research
- roughly 200-680 mg/day of standardized extract
- Safety note
- Rhodiola is considered possibly safe for up to about 12 weeks of use, per NCCIH, but it can cause dizziness, headache, dry mouth, or insomnia, and there is a documented interaction with the blood pressure drug losartan, so people on blood pressure medication should check with a doctor first.
- Sources
- Olsson et al., 2009 · Wang et al., 2025
Grape Seed Extract
Vitis vinifera · seed
A source of plant compounds called proanthocyanidins, studied for blood pressure and circulation. A meta-analysis of 16 RCTs and additional individual trials consistently show modest blood-pressure-lowering effects at these doses, making this one of the better-supported ingredients here.
- In HorseFil
- Not published
- Dose used in research
- roughly 100-300 mg/day of standardized grape seed extract
- Safety note
- LiverTox reports grape seed extract has not been linked to liver injury in clinical trials, but its polyphenols (proanthocyanidins) show antiplatelet/anticoagulant activity in laboratory research, so people taking blood thinners such as warfarin or aspirin should talk to a doctor before combining them with grape seed extract.
- Sources
- Feringa et al., 2011 · Park et al., 2016
HorseFil ingredients vs. the research dose
| Ingredient | Dose used in human research | Evidence | Fits a gummy? |
|---|---|---|---|
| L-Citrulline | 1.5-8 g/day | Limited | Hard fit – studies use grams |
| L-Carnitine | 1-4 g/day | Limited | Hard fit – studies use grams |
| Panax Ginseng Extract | roughly 600 mg-3 g/day of standardized ginseng extract, often taken for several weeks | Limited | Mixed – some studies use grams |
| Maca Root Extract | 1.5-3.5 g/day of dried maca root powder, typically for 6-12 weeks | Limited | Hard fit – studies use grams |
| Rhodiola Extract | roughly 200-680 mg/day of standardized extract | Limited | Good fit – studies use milligrams |
| Grape Seed Extract | roughly 100-300 mg/day of standardized grape seed extract | Moderate | Good fit – studies use milligrams |
A gummy weighs a few grams in total, and sugar and gummy base take up much of that. L-citrulline trials used 1.5 to 8 grams a day and L-carnitine trials used 1 to 4 grams a day. One gummy is very unlikely to hold research-level amounts of either. Maca sits in the same range, at 1.5 to 3.5 grams a day. Rhodiola and grape seed extract are studied in the hundreds of milligrams, a size a gummy can plausibly carry.
What does each ingredient do?
A short note on each ingredient and the human research behind it.
L-Citrulline
An amino acid found in watermelon. The body turns it into arginine, which helps make nitric oxide for blood flow. Mirenayat et al., 2018 studied it in adults.
L-Carnitine
A compound that moves fatty acids into cells to be burned for energy. Malaguarnera et al., 2007 studied it in adults.
Panax Ginseng Extract
Asian (Korean) ginseng root, one of the most studied herbs for fatigue. Arring et al., 2018 studied it in adults.
Maca Root Extract
A Peruvian root vegetable used for energy and vitality. Shin et al., 2010 studied it in adults.
Rhodiola Extract
A cold-climate herb studied for stress-related fatigue. Olsson et al., 2009 studied it in adults.
Grape Seed Extract
A source of plant compounds called proanthocyanidins, studied for blood pressure and circulation. Feringa et al., 2011 studied it in adults.
What is the gummy base, and why does it matter?
The six named ingredients are not the whole gummy. A gummy also needs a base to hold its shape and a way to taste good enough to eat every day. None of that is on the listing panel or the sales page.
- Sugar or sweetener amount
- Gelatin or pectin (which one decides if it is truly vegetarian)
- Colors and flavors used
- Extract standardization, such as ginsenoside or rosavin percent
The "Vegetarian" seal suggests pectin over gelatin, but the sales page does not confirm it either way. If that matters to you, call the order desk at +1 (302) 200-3480 and ask before you buy. Full label notes: HorseFil supplement facts.
Which HorseFil ingredients fit a gummy, and which do not?
Best fit for a gummy
Rhodiola and grape seed extract. Their study doses sit in the hundreds of milligrams, a size a gummy could plausibly carry.
Hardest fit for a gummy
L-citrulline and L-carnitine. Both work at multiple grams a day. A powder scoop or several capsules is the usual way to reach those numbers, not one small gummy.
Panax ginseng and maca sit in between, with study doses from a few hundred milligrams up to a few grams. Without a published amount, there is no way to say where HorseFil lands. More on the mechanism side: how HorseFil works. On the hardest-fit ingredient: L-citrulline dose research.
Do the HorseFil ingredients need any safety care?
These six ingredients are common in supplements and are usually well tolerated by healthy adults. A few need extra care if you take certain medicines.
- L-citrulline and grape seed extract may add to the effect of blood pressure medicine or blood thinners (Mirenayat et al., 2018; LiverTox (National Institute of Diabetes and Digestive and Kidney Diseases), 2023)
- Panax ginseng may lower blood sugar and can affect warfarin (National Center for Complementary and Integrative Health (NIH), 2023)
- L-carnitine can interact with thyroid medicine and warfarin (National Institutes of Health, 2023)
- Rhodiola can cause dizziness or dry mouth in some people (National Center for Complementary and Integrative Health (NIH), 2023)
HorseFil is for adults 18 and over. Talk to a doctor first if you take any medicine. The full list of cautions and interactions is on the HorseFil side effects page.
Ingredients: common questions
What are the six ingredients in HorseFil?
L-Citrulline, L-Carnitine, Panax Ginseng Extract, Maca Root Extract, Rhodiola Extract and Grape Seed Extract, as printed on the listing panel.
How much of each ingredient is in a HorseFil gummy?
Not published. The Supplement Facts panel in the product photos is too small to read, and the sales page does not list milligram amounts.
Which HorseFil ingredient has the strongest evidence?
Grape seed extract has the most consistent human trial data, mainly for blood pressure, at doses of roughly 100 to 300 mg a day.
Can one gummy really hold research-level doses of citrulline and carnitine?
Unlikely. Both were studied at 1 to 8 grams a day, more active material than a small gummy typically holds once sugar and gummy base are counted.
What is in the gummy besides the six named ingredients?
The gummy base, such as sugar, gelatin or pectin, colors and flavors, is not published. Only the six active ingredient names are listed.
Is Panax ginseng the same as American ginseng?
No. Panax ginseng (also called Asian or Korean ginseng) and American ginseng (Panax quinquefolius) are related but separate species with their own research.
Do the HorseFil ingredients interact with medication?
Some can. L-citrulline, grape seed extract and ginseng may interact with blood pressure medicine or blood thinners. Ask a doctor if you take medicine.
Where can I see the research behind each ingredient?
Each ingredient's tab in the decoder above links to its sources, and the full reference list is on the HorseFil homepage.
Keep reading
How does HorseFil work?
The three jobs these six ingredients are meant to do, and what the research found for each.
Read →HorseFil Supplement Facts
What the label shows, what it does not, and how to read a facts panel.
Read →What are the benefits of HorseFil?
The claim on the bottle, matched against each ingredient and its evidence.
Read →Order HorseFil from the official U.S. shop
30 gummies per bottle, one a day. Packs run from $158 for 2 bottles to $294 for 6 bottles, with free shipping and a 60-day money-back guarantee. Questions first? Call +1 (302) 200-3480.
