Blog · Research
L-Citrulline and Panax Ginseng: 3-9 g, 6 Months and the Doses HorseFil Does Not Publish
Quick answer
L-citrulline and Panax ginseng are two of HorseFil's six named ingredients. Exercise studies used about 3-9 g of citrulline, and short-term ginseng use up to 6 months appears safe. HorseFil publishes no amount for either, so research doses cannot be matched to a gummy. No study of the finished formula is published.
What are the key numbers for L-citrulline and Panax ginseng?
Key facts
- L-citrulline in exercise studies: about 3-9 g.
- Up to 6 g a day showed no adverse effects in short-term studies.
- Panax ginseng: doses vary by extract. Short-term use up to 6 months appears safe.
- Insomnia is the most common ginseng side effect.
- HorseFil's amount of either ingredient: not published.
- Finished-formula studies of the pair: none published.
What are L-citrulline and Panax ginseng?
L-citrulline is an amino acid. Your body turns it into arginine. Panax ginseng, also called Asian ginseng, is a root used in traditional medicine. HorseFil lists the root as an extract.
They are first and third on the HorseFil list. Both are studied for energy. They work in different ways, so we treat them one at a time.
Is L-citrulline the same as nitric oxide?
No. They are different things. L-citrulline is an amino acid you take in. Nitric oxide is a signal your body makes, and it tells blood vessel walls to relax.
The path runs in steps. Your body turns citrulline into arginine. It then uses arginine to make nitric oxide. Citrulline sits one step earlier in the same chain as arginine.
HorseFil lists citrulline and no arginine. So any blood-flow idea behind the formula rests on citrulline alone.
What doses do studies use, and what is HorseFil's dose?
| Ingredient | What research reports | HorseFil amount |
|---|---|---|
| L-citrulline | About 3-9 g in exercise studies (NIH ODS) | Not published |
| L-citrulline safety | Up to 6 g a day showed no adverse effects in short-term studies (NIH ODS) | Not published |
| Panax ginseng | Varies by extract (NCCIH, 2025) | Not published |
| Panax ginseng safety | Short-term use up to 6 months appears safe (NCCIH, 2025) | Not published |
If you are searching for a recommended or effective citrulline dose, this page cannot give one for HorseFil. The number is not published. The research figures are background for talking to your doctor.
What does the evidence say?
For citrulline, a 2022 meta-analysis found no clear benefit for aerobic exercise performance (Viribay et al., 2022). For ginseng, Asian ginseng may have a small effect on general fatigue, but the findings are inconsistent (NCCIH, 2025). The NIH found no effect of ginseng on power or endurance (NIH ODS).
Citrulline
No clear aerobic benefit in a 2022 meta-analysis.
Ginseng
A small, inconsistent effect on general fatigue.
Together in HorseFil
No study of the finished formula is published.
Can you take L-citrulline and ginseng together?
HorseFil puts them in one gummy, but no study of that pair, at HorseFil's unpublished amounts, is published. We can only describe each on its own.
The same goes for questions about ginseng and arginine together. HorseFil lists no arginine, and no data on that mix are published here. Ask your doctor or pharmacist.
What we can say: ginseng may lower blood sugar and affect clotting (NCCIH, 2025). Long-term data for citrulline are limited (NIH ODS).
Why does a study dose not carry over to a gummy?
A study picks one form, one strength and one length of time. A gummy may differ on all three. Ginseng extracts differ by plant part, strength and process, so results from one study may not carry over to another product.
Citrulline has its own gap. Studies list grams. HorseFil lists no amount. Until that number is public, nobody can say whether a gummy sits near, far above or far below a study dose.
A full answer would need five things: the amount of citrulline per serving, the type and strength of the ginseng extract, the serving size, a lab result and a study of the finished formula. None of the five is published.
What safety points matter for these two?
- Ginseng: insomnia is the most common side effect; it may lower blood sugar and affect clotting; it may be unsafe in pregnancy
- Citrulline: no adverse effects at up to 6 g a day in short studies; long-term data are limited
- Blood thinners and diabetes medicine: ask a doctor first
- Adults 18 and over only
Stop and call a doctor if you feel unwell after starting.
What should you ask your doctor?
- Does ginseng matter with my blood sugar or my blood thinner?
- Does a short course of citrulline matter with my blood pressure medicine?
- Which of my products already hold ginseng, carnitine or citrulline?
Bring a photo of the Supplement Facts panel from your bottle. It shows the serving and, if printed, the amount of each active ingredient.
How do you find the amounts on your own bottle?
Find the panel
Look on the side or back label for Supplement Facts.
Find the serving
Note how many gummies make one serving.
Find the two names
Look for L-citrulline and Panax ginseng extract.
Read the amounts
If a number is printed in mg or g, write it down.
Check for a blend
A blend gives one total weight and hides the split.
If the panel shows no amount for either name, you know as much as this site does.
Frequently asked questions
Is L-citrulline the same as nitric oxide?
No. L-citrulline is an amino acid. Your body turns it into arginine, which it uses to make nitric oxide, a signal that relaxes blood vessels.
How much L-citrulline is in HorseFil?
The amount is not published. Exercise studies used about 3-9 g, but that is not HorseFil's dose.
How much L-citrulline per day is safe?
Up to 6 g a day showed no adverse effects in short-term studies. HorseFil's amount is not published, so follow the label and ask a doctor.
Is there a recommended or effective dose of L-citrulline?
This site cannot give one. Research doses vary by study, and HorseFil's dose is not published.
Is L-citrulline with Panax ginseng proven to work?
No study of the finished formula is published. A 2022 meta-analysis found no clear aerobic benefit for citrulline, and ginseng results on fatigue are inconsistent.
Can I take ginseng and arginine together?
No data on that mix are published here, and HorseFil lists no arginine. Ask your doctor or pharmacist.
Sources named on this site
- National Center for Complementary and Integrative Health (2025). Asian Ginseng: Usefulness and Safety.
- NIH Office of Dietary Supplements (accessed 2026). Dietary Supplements for Exercise and Athletic Performance: Fact Sheet for Health Professionals.
- Viribay A, Fernández-Landa J, Castañeda-Babarro A, et al. (2022). Effects of Citrulline Supplementation on Different Aerobic Exercise Performance Outcomes: A Systematic Review and Meta-Analysis. Nutrients 14(17):3479.
Our view
Numbers are useful only when they match. Here they do not. Studies used grams of citrulline and varied extracts of ginseng. HorseFil prints neither amount. So the honest summary is that the research is background, and the bottle is the source.
If you take blood thinners or diabetes medicine, the ginseng notes matter most. Ask first.
For the full list of six, see the ingredients post. For side effects, see the side effects post.
Last updated . Medically reviewed by Dr. Arthur Burnett II, MD, Physician.
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