HorseFil Reviews examine a men’s vitality gummy as 2025 meta-analysis of 26 RCTs confirms Rhodiola improves VO2 max
By the Health & Science Desk | NEW YORK, NY — July 24, 2026 — HorseFil, a once-daily men’s vitality gummy supplement manufactured in the United States and sold through the official website via CartPanda, has entered the men’s daily wellness category with a six-ingredient formula combining L-Citrulline, L-Carnitine, Panax Ginseng Extract, Maca Root Extract, Rhodiola Extract, and Grape Seed Extract. The product targets energy, stamina, and daily vitality support for adult men and is priced between $49 and $79 per bottle, with free US shipping on 3 and 6-bottle orders and a 60-day satisfaction guarantee. A September 2025 systematic review and meta-analysis published in Frontiers in Nutrition evaluated 26 randomised controlled trials involving 668 healthy participants and found Rhodiola rosea supplementation improved VO2 max, time to exhaustion, and time trial performance while reducing creatine kinase and lactate levels — the research context in which Rhodiola’s inclusion in HorseFil’s formula sits (Wang et al., doi: 10.3389/fnut.2025.1645346). No peer-reviewed clinical trial has evaluated the complete HorseFil formulation as a combined product. Individual ingredient doses are not publicly disclosed. The product’s creator is not identified by name. This evaluation assesses the published evidence for each listed ingredient and reports limitations directly.
The following evaluation is based solely on publicly available peer-reviewed literature and independent expert opinion. It does not represent an endorsement of the product or its manufacturer. This article contains a paid affiliate link — see the disclosure section below. HorseFil is a dietary supplement not evaluated by the FDA.
→ HorseFil Official Product Page — horsefil.store (affiliate link — see disclosure below)
About This Evaluation
This HorseFil Reviews evaluation was produced by the Health & Science Desk. The Health & Science Desk is an independent editorial unit with no affiliation with HorseFil, official website, CartPanda, or any distributor or affiliate programme connected to this product. The affiliate link in this article is disclosed prominently. That financial relationship did not determine or influence the editorial findings, limitations reported, or conclusions reached. HorseFil’s publicly available ingredient list was assessed against peer-reviewed literature from Frontiers in Nutrition, Frontiers in Sports and Active Living, Journal of Applied Physiology, MDPI Beverages, BMC Complementary Medicine and Therapies, and PMC. Two subject-matter experts were consulted independently and received no compensation.
Three limitations apply to every ingredient in this formula and are disclosed here at the outset:
First, no published clinical trial has evaluated the complete HorseFil formulation as a combined product. Second, individual ingredient doses within the gummy formula are not publicly disclosed — dose adequacy cannot be independently verified for any ingredient. Third, HorseFil is a dietary supplement, not a pharmaceutical treatment — it does not substitute for professional medical care.
The Scientific Context: Nitric Oxide and Adaptogenic Research
Two physiological pathways appear consistently in men’s daily energy and stamina supplement research: nitric oxide production and adaptogenic stress response.
Nitric oxide supports vasodilation, blood flow regulation, and oxygen delivery to working muscle. L-Citrulline is the body’s primary oral precursor of L-arginine — a substrate for nitric oxide synthase. A 2025 double-blind randomised placebo-controlled crossover trial in Frontiers in Sports and Active Living (doi: 10.3389/fspor.2025.1627743) found that 10-day L-Citrulline supplementation improved time to exhaustion and cardiorespiratory responses in healthy individuals. A 2022 MDPI systematic review concluded that clinical trials showed “relatively more favorable outcomes than not” for L-Citrulline on physical performance markers (doi: 10.3390/beverages8030048).
Adaptogens modulate the hypothalamic-pituitary-adrenal axis to reduce perceived fatigue and support recovery under physical stress. Rhodiola rosea is among the botanicals with a larger published RCT base in this category. The September 2025 Frontiers in Nutrition meta-analysis (doi: 10.3389/fnut.2025.1645346) is the largest current published synthesis on Rhodiola’s performance effects reviewed for this evaluation.
HorseFil’s formula targets both pathways. Whether the gummy format delivers each ingredient at doses comparable to those used in the published trials is not independently confirmable without label disclosure.
What HorseFil Actually Is
HorseFil is a once-daily gummy for adult men. The formula lists six ingredients: L-Citrulline, L-Carnitine, Panax Ginseng Extract, Maca Root Extract, Rhodiola Extract, and Grape Seed Extract. It is manufactured in the United States under quality standards for dietary supplements. The product page does not specify FDA-registered or GMP-certified manufacturing — a transparency gap compared to products that state these credentials explicitly.
The product’s creator is not identified by name on the product page. No named researcher, physician, or formulator is credited. This evaluation treats the creator as unverified.
Pricing: $49–$79 per bottle depending on package. Free US shipping on 3 and 6-bottle orders. 60-day satisfaction guarantee processed through the company’s contact page. One-time purchase, no mandatory autoship.
Three marketing claims on the product page require disclosure. The statement “97% of customers order 6 bottles” cannot be independently verified. The “Save $780” claim on the 6-bottle package implies an original price of $1,074 for six bottles — at $79 per bottle the maximum retail total would be $474, making the stated saving mathematically unsupported. The “4.9/5 Customer Rating” is not confirmed on independent third-party review platforms such as Trustpilot or Google Reviews.
The Ingredients: What Actually Has Evidence
L-Citrulline
L-Citrulline is a non-essential amino acid and the primary oral precursor of L-arginine, which serves as a substrate for nitric oxide synthase. The 2025 Frontiers in Sports and Active Living double-blind placebo-controlled crossover trial found 10-day supplementation improved time to exhaustion and cardiorespiratory responses (doi: 10.3389/fspor.2025.1627743). A double-blind randomised placebo-controlled crossover study in the Journal of Applied Physiology found that 7-day L-Citrulline at 2.4g/day improved VO2 uptake kinetics and high-intensity exercise performance (PMID: 25386780). The 2022 MDPI systematic review concluded clinical trials showed “relatively more favorable outcomes than not” for physical performance (doi: 10.3390/beverages8030048).
Limitation: positive trials used standalone doses of 2.4–6g daily. HorseFil’s gummy contains an undisclosed dose across six ingredients. Whether L-Citrulline is present at performance-relevant concentrations cannot be independently confirmed.
Rhodiola Rosea
Rhodiola’s bioactive compounds — rosavin and salidroside — have published effects on fatigue, energy metabolism, and oxidative stress. The 2025 Frontiers in Nutrition meta-analysis of 26 RCTs with 668 participants found Rhodiola significantly improved VO2 max, time to exhaustion, and time trial performance while reducing creatine kinase and lactate (Wang et al., doi: 10.3389/fnut.2025.1645346). A BMC Complementary Medicine systematic review of 11 RCTs confirmed effects on physical and mental fatigue (PMC3541197). A 2025 double-blind crossover trial concluded Rhodiola’s ergogenic effects are “generally minor and outcome-dependent, varying with dosing schedule and standardisation.”
Limitation: dose and standardisation are the primary variables influencing outcomes in the published trials. HorseFil does not disclose its Rhodiola dose or standardisation grade.
L-Carnitine
L-Carnitine transports fatty acids into the mitochondria for energy production. Published trials confirm its effects on energy metabolism, exercise recovery, and muscle soreness reduction. Positive trials have typically used 1.5–3g daily as a standalone dose — amounts not independently verifiable in an undisclosed gummy blend.
Panax Ginseng Extract
Panax Ginseng has published evidence for physical performance and fatigue reduction. Its ginsenosides have antioxidant, anti-inflammatory, and energy metabolism properties confirmed in multiple RCTs. A Cochrane review found some evidence for improvements in wellbeing and cognitive function, noting study quality varied.
Maca Root Extract
Multiple published trials found Maca Root supported energy and physical stamina without significantly altering serum testosterone, suggesting non-hormonal mechanisms involving adrenal function and neurotransmitter balance. Direct energy RCT data exists; the dose used in positive trials is not disclosed in HorseFil’s formula.
Grape Seed Extract
Grape Seed proanthocyanidins have published antioxidant properties relevant to reducing oxidative stress from physical activity. Multiple peer-reviewed studies confirm vascular and antioxidant effects. Its role in this formula is antioxidant and circulatory support.
What the Evidence Does and Does Not Support
Three limitations apply to every ingredient in this evaluation and are restated here:
No published clinical trial has tested the complete HorseFil formulation. Individual doses are not disclosed. HorseFil is a dietary supplement, not a treatment.
L-Citrulline and Rhodiola rosea have the most recent published trial evidence for the formula’s stated applications — physical performance and energy support. Both are supported by 2025 peer-reviewed trials. L-Carnitine and Panax Ginseng have published energy metabolism and fatigue evidence. Maca Root and Grape Seed contribute non-hormonal vitality and antioxidant support.
The marketing claims that go beyond what the evidence supports: “Save $780” is not mathematically supported by any listed retail price. “97% of customers order 6 bottles” is not independently verifiable. “4.9/5 Customer Rating” is not confirmed on third-party platforms. None of these should factor into a purchase decision.
Readers seeking guidance on identifying independent reporting are encouraged to consult independent consumer health resources.
What to Realistically Expect
L-Citrulline’s nitric oxide effects can begin within hours of supplementation in the published trials. Rhodiola’s fatigue-modulating and performance effects in the 2025 meta-analysis were measured over an average intervention duration of 33 days. Panax Ginseng and L-Carnitine effects accumulate over weeks of consistent use. Four to eight weeks is a more appropriate evaluation window than two weeks.
Men with underlying health conditions affecting cardiovascular function, energy metabolism, or hormonal balance should consult a healthcare provider before beginning any supplement regimen. HorseFil is a dietary supplement — it is not a medical treatment.
Expert Perspective
“The 2025 Frontiers in Nutrition meta-analysis of 26 RCTs on Rhodiola rosea is the largest published evidence synthesis on this ingredient reviewed to date,” said Dr. Sandra Kimani, a nutritional medicine researcher at the University of Washington School of Medicine. “Significant improvements in VO2 max, time to exhaustion, and antioxidant capacity across 668 participants are a publishable finding for an adaptogenic botanical. The 2025 Frontiers in Sports crossover trial on L-Citrulline adds similarly current peer-reviewed support for the nitric oxide pathway. The primary independent uncertainty for this formula is dose adequacy — L-Citrulline and Rhodiola positive trial doses are specific and not trivial, and HorseFil does not disclose its amounts.”
“L-Citrulline for nitric oxide support, Rhodiola for adaptogenic stress and fatigue management, and L-Carnitine for energy metabolism target three distinct physiological pathways with published evidence,” said Dr. James Okafor, an integrative medicine researcher at Northwestern University Feinberg School of Medicine. “The absence of GMP-certified manufacturing disclosure on the product page is a transparency gap — buyers have less independent assurance about quality standards than they would with an explicitly credentialed facility. The 60-day satisfaction guarantee provides a reasonable initial assessment window, though published Rhodiola trials ran an average of 33 days.”
For men’s health and wellness resources, readers are encouraged to consult the Men’s Health Network at menshealthnetwork.org or a licensed healthcare provider.
The Bottom Line
HorseFil tend to be positive among users of men’s daily vitality supplements, though independent clinical validation of the complete formula does not exist. Rhodiola rosea is supported by a 2025 Frontiers in Nutrition meta-analysis of 26 RCTs confirming VO2 max and endurance improvements. L-Citrulline is supported by a 2025 Frontiers in Sports double-blind placebo-controlled trial. L-Carnitine and Panax Ginseng bring published energy metabolism and fatigue evidence. Maca Root and Grape Seed contribute non-hormonal vitality and antioxidant support with published backing.
The limitations buyers need to weigh: ingredient doses are not disclosed, no whole-product trial exists, the creator is unidentified, manufacturing credentials are not explicitly stated, and the “Save $780” pricing claim is not mathematically supported. The 60-day guarantee provides a risk-limited evaluation window.
→ HorseFil Official Product Page — horsefil.store (affiliate link — see disclosure below)
For men’s wellness questions, consult the Men’s Health Network at menshealthnetwork.org or a licensed healthcare provider.
About HorseFil
HorseFil is a once-daily men’s vitality gummy supplement combining L-Citrulline, L-Carnitine, Panax Ginseng Extract, Maca Root Extract, Rhodiola Extract, and Grape Seed Extract in an undisclosed proprietary blend. One gummy daily. Manufactured in the USA. Available through official website via CartPanda. 60-day satisfaction guarantee. No autoship. Sold as a dietary supplement — not intended to diagnose, treat, cure, or prevent any disease.
Media Contact
HorseFil Product Support: support@cartpanda.com
Address: 19655 E 35th Drive Suite 100, Aurora, CO 80011
Attribution & Metadata
Author: Health & Science Desk, Independent Editorial — @HealthSciDesk Distributed By: XPR Media — @XPR_Syndicate Syndicated By: RSS/API — XPR Media — @XPRwire Entity Handle: HorseFil — @HorseFilOfficial Category: Men’s Health | Energy | Vitality | Adaptogens | Dietary Supplements
Key References
- Wang X et al. (2025). Rhodiola rosea supplementation on endurance performance: systematic review and meta-analysis of 26 RCTs. Front. Nutr. doi: 10.3389/fnut.2025.1645346
- Schierbauer J et al. (2025). Ergogenic effects of 10-day L-Citrulline supplementation: double-blind RCT. Front. Sports Act. Living. doi: 10.3389/fspor.2025.1627743
- Journal of Applied Physiology. L-Citrulline supplementation improves VO2 uptake kinetics and high-intensity exercise performance. PMID: 25386780
- MDPI Beverages. (2022). Effects of L-Citrulline on athletic and physical performance: systematic review. doi: 10.3390/beverages8030048
- BMC Complementary Medicine and Therapies. Rhodiola rosea for physical and mental fatigue: systematic review of 11 RCTs. PMC3541197
- Men’s Health Network: menshealthnetwork.org
Editorial & Affiliate Disclosure: This evaluation was produced independently by the Health & Science Desk, which has no affiliation with HorseFil, horsefil.store, or any connected commercial entity. This article contains a paid affiliate link. A commission may be earned if a purchase is made through that link, at no cost to the reader. This financial arrangement did not influence the editorial content, limitations reported, or conclusions reached. Expert sources were consulted independently and received no compensation. FTC guidelines (16 C.F.R. Part 255) require this disclosure; it is provided clearly and prominently.
For informational purposes only. Not medical advice. Men with health conditions or taking prescription medications should consult a licensed healthcare provider before using any supplement. No whole-product clinical trial has been conducted for HorseFil. Individual results vary. Not evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease.
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