The Men's Vitality Supplement Guide: What The Evidence Actually Supports

Male vitality is a wellbeing category, not a medical one, and that distinction explains almost everything about how these products are sold.

This guide covers what the category is for, which botanicals have randomised human trials behind them and at what amounts, which words on these labels carry no information, and where the genuine risk in the aisle sits.

Written as a category article. It names one product at the end, in the interest of being honest about who publishes it.

The category

What people are actually buying in this aisle

Two quite different things, sold side by side and rarely separated.

The first is a wellbeing purchase: energy, drive, the sense of being yourself on a Tuesday afternoon. It is diffuse, it is real, and it is the thing most of these labels describe when they use words like vitality and stamina.

The second is a clinical problem. Erectile dysfunction is a diagnosis with treatments, an established questionnaire and a large trial literature. It is also frequently the first sign of vascular disease, which is why it belongs in a consulting room rather than in a shopping basket.

Supplements in this category are sold into the first and bought, sometimes, for the second. A label that says support sexual health is making a wellbeing claim; a reader in the second group who takes it as an answer has made the substitution nobody on either side intended.

The evidence

The ingredients with randomised human trials behind them

Ingredient	What the trials used	What they found
L-arginine	1,500 to 5,000 mg a day	Ten randomised trials in 540 men with mild to moderate erectile difficulty, pooled in 2019. Odds ratio 3.37 against placebo; four of five IIEF subdomains improved and sexual desire did not (Rhim 2019)
Maca	1,500 to 3,000 mg a day	Sexual desire improved from week eight in healthy men, independent of testosterone and mood (Gonzales 2002); a separate trial in men with mild erectile difficulty found a small gain over placebo at 2,400 mg (Zenico 2009)
Ashwagandha	An extract giving 21 mg of withanolide glycosides a day	DHEA-S and testosterone rose against placebo in overweight men aged 40 to 70; fatigue, vigour and sexual wellbeing did not differ (Lopresti 2019)
Tribulus terrestris	1,500 mg of dry extract a day	IIEF gain over placebo in 180 men over twelve weeks (Kamenov 2017); nothing at 800 mg for thirty days (Santos 2014); testosterone unmoved across eight pooled studies (Suharyani 2026)
Panax ginseng	Varies widely by trial	Identified alongside arginine and Tribulus as improving male sexual function in a 2023 analysis of marketed products (Petre 2023)
Muira puama	No human amount established	Animal work and chemistry. Not among the fourteen species with pharmacological study in a 2024 review of seventy-four Brazilian plants used for this purpose (Teixeira 2024)
Catuaba	No human amount established	A trade name covering several barks. Fourteen commercial preparations examined in Vienna were mostly not what their labels claimed (Kletter 2004)
Horny goat weed	No human amount established	Icariin inhibits PDE-5 in laboratory tests at about eighty times sildenafil’s concentration (Dell'Agli 2008). No randomised trial of the herb alone

Every figure in the middle column was read out of the paper's own abstract rather than from a summary of it.

Honest category analysis

The amount problem, which is the whole problem

A 2023 analysis took twenty-five supplements marketed for erectile dysfunction in Italy and scored each against the ingredients and minimum effective doses the literature supports. Two matched the high-expected-efficacy cluster, three the lower one, and twenty matched the criterion of no expected efficacy at all (Petre 2023).

The failure was rarely the ingredient list. It was the amount, spread thin across a long one. A blend naming twelve botanicals inside a few hundred milligrams gives each of them a share that no trial has ever tested.

A 2024 network meta-analysis of fifteen randomised trials in 1,000 men reached a compatible conclusion from the other direction: against a background of general ineffectiveness, L-arginine and a carnitine pair were of some usefulness, mostly alongside a prescription rather than instead of one (Barbonetti 2024).

The practical reading for a shopper is simple and slightly deflating. In this aisle, a short ingredient list at a real amount beats a long one at a token amount, every time, and most of the shelf is the second kind.

Reading a label

The words on these labels, translated

The word	What it means	How much weight to give it
Proprietary blend	A list with one combined total and no per-ingredient split	It hides the amounts. Sometimes for commercial reasons, sometimes because they are small
Standardised extract	Concentrated to a stated percentage of a marker compound	Genuinely useful when the percentage and the marker are both printed
Clinically studied	Somebody ran a study on something	Almost none, unless the ingredient, the amount and the paper are named
Doctor formulated	Usually nothing verifiable	None, where no clinician, institution or qualification is named
Natural	No regulatory definition in this context	None. It is tone rather than information
Male enhancement	A category name, not a claim about a mechanism	It tells you which shelf the product is on
Supports	The verb that keeps a claim inside structure and function territory	It is the correct word and it is doing real legal work

Category risk

The real risk in this aisle, and it is not the botanicals

Adulteration. A 2018 review counted eighty distinct synthetic phosphodiesterase type 5 inhibitors identified as adulterants in dietary supplements: fifty analogues of sildenafil, twenty-one of tadalafil, seven of vardenafil and two others (Kee 2018). Two thirds were first reported from Asian countries, and the review names the convenience of online purchase as a plausible driver.

A separate four-year programme screening the online and offline markets for illegal sexual-enhancement supplements and counterfeit drugs kept finding them (Lee 2019). The FDA publishes its warnings about tainted products in exactly this category as sexual enhancement and energy product notifications, which take under a minute to search.

This is the one genuine hazard in the aisle, and the protections are procedural rather than pharmacological: a named seller with an address and a telephone number, a traceable order, a lot code on the container, and suspicion of anything that produces a strong, fast physical effect. Botanicals at the amounts these bottles carry do not do that.

Context

What actually moves these outcomes more than a supplement does

Any honest guide to this category has to say this, and most do not.

Sleep, alcohol, weight, cardiovascular fitness and stress all move sexual function, energy and drive, and they move them further than any product on this shelf. Erectile difficulty in particular is often vascular, which means the interventions with the best evidence behind them are the boring ones.

That is not an argument against supplements and it is certainly not an argument for guilt. It is an argument about order of operations. A bottle taken alongside four hours of sleep is being asked to do something nothing in this category has ever done, and it will be judged unfairly for failing.

It is also why every trial cited in this guide used a placebo arm. People who decide to do something about a problem tend to change several things at once, and separating the bottle from the decision is exactly what a control group is for.

Disclosure

Where this guide's own publisher sits

Jelleyforce is the licensed U.S. retail desk for Jelly Force, and it earns from orders placed through the checkout this website hands off to. That is worth knowing while reading a category guide published by it.

Jelly Force’s Supplement Facts panel names nine ingredients in one 82 mg blend, caffeine 5 mg among them; its advertising names five. Three of the nine, maca, L-arginine and tribulus, are in the evidence table above with trials behind them. Three, muira puama, catuaba and horny goat weed, are in the rows that say no human amount is established. And the blend total is an order of magnitude below the trial column.

Those are the facts a guide like this one produces when it is turned on its own product, and they are printed here rather than left for somebody else to find. The checklist article scores it properly.

About this review

Sources behind this Jelly Force page

Written and reviewed by the Jelly Force Team at Jelleyforce

These pages are written from the Jelly Force Supplement Facts panel, the seller’s own page and this desk’s batch paperwork. The panel names nine ingredients in one 82 mg blend and gives caffeine alone its own figure, so beside every other name we set the amount the published trials used, name the trial it came from, and say straight out that a blend total cannot be measured against it. Corrections are made on the page itself and move the review date forward. Write to contact@jelleyforce.com. Last reviewed September 2026.

Every source below was pulled from PubMed by identifier and checked against the retraction index before it was printed here.

Gonzales GF, Cordova A, Vega K, et al. Effect of Lepidium meyenii (MACA) on sexual desire and its absent relationship with serum testosterone levels in adult healthy men. Andrologia. 2002;34(6):367-72. PMID 12472620. https://pubmed.ncbi.nlm.nih.gov/12472620/
Zenico T, Cicero AF, Valmorri L, Mercuriali M, Bercovich E. Subjective effects of Lepidium meyenii (Maca) extract on well-being and sexual performances in patients with mild erectile dysfunction: a randomised, double-blind clinical trial. Andrologia. 2009;41(2):95-9. PMID 19260845. https://pubmed.ncbi.nlm.nih.gov/19260845/
Dording CM, Fisher L, Papakostas G, et al. A double-blind, randomized, pilot dose-finding study of maca root (L. meyenii) for the management of SSRI-induced sexual dysfunction. CNS Neurosci Ther. 2008;14(3):182-91. PMID 18801111. https://pubmed.ncbi.nlm.nih.gov/18801111/
Teixeira TM, Boeff DD, de Oliveira Carvalho L, Ritter MR, Konrath EL. The traditional use of native Brazilian plants for male sexual dysfunction: Evidence from ethnomedicinal applications, animal models, and possible mechanisms of action. J Ethnopharmacol. 2024;318(Pt A):116876. PMID 37437795. https://pubmed.ncbi.nlm.nih.gov/37437795/
Kletter C, Glasl S, Presser A, et al. Morphological, chemical and functional analysis of catuaba preparations. Planta Med. 2004;70(10):993-1000. PMID 15490329. https://pubmed.ncbi.nlm.nih.gov/15490329/
Lopresti AL, Drummond PD, Smith SJ. A Randomized, Double-Blind, Placebo-Controlled, Crossover Study Examining the Hormonal and Vitality Effects of Ashwagandha (Withania somnifera) in Aging, Overweight Males. Am J Mens Health. 2019;13(2):1557988319835985. PMID 30854916. https://pubmed.ncbi.nlm.nih.gov/30854916/
Arumugam V, Vijayakumar V, Balakrishnan A, et al. Effects of Ashwagandha (Withania somnifera) on stress and anxiety: A systematic review and meta-analysis. Explore (NY). 2024;20(6):103062. PMID 39348746. https://pubmed.ncbi.nlm.nih.gov/39348746/
Rhim HC, Kim MS, Park YJ, et al. The Potential Role of Arginine Supplements on Erectile Dysfunction: A Systemic Review and Meta-Analysis. J Sex Med. 2019;16(2):223-234. PMID 30770070. (Erratum: J Sex Med. 2020;17(3):560.) https://pubmed.ncbi.nlm.nih.gov/30770070/
Barbonetti A, Tienforti D, Antolini F, et al. Nutraceutical interventions for erectile dysfunction: a systematic review and network meta-analysis. J Sex Med. 2024;21(11):1054-1063. PMID 39279185. https://pubmed.ncbi.nlm.nih.gov/39279185/
Kamenov Z, Fileva S, Kalinov K, Jannini EA. Evaluation of the efficacy and safety of Tribulus terrestris in male sexual dysfunction - A prospective, randomized, double-blind, placebo-controlled clinical trial. Maturitas. 2017;99:20-26. PMID 28364864. https://pubmed.ncbi.nlm.nih.gov/28364864/
Santos CA Jr, Reis LO, Destro-Saade R, Luiza-Reis A, Fregonesi A. Tribulus terrestris versus placebo in the treatment of erectile dysfunction: A prospective, randomized, double blind study. Actas Urol Esp. 2014;38(4):244-8. PMID 24630840. https://pubmed.ncbi.nlm.nih.gov/24630840/
Suharyani S, Amanda B, Angellee J, William W, Hariyanto TI, I'tishom R. Tribulus terrestris for management of patients with erectile dysfunction: a systematic review and meta-analysis of randomized trials. Int J Impot Res. 2026;38(1):11-18. PMID 40360723. https://pubmed.ncbi.nlm.nih.gov/40360723/
Dell'Agli M, Galli GV, Dal Cero E, et al. Potent inhibition of human phosphodiesterase-5 by icariin derivatives. J Nat Prod. 2008;71(9):1513-7. PMID 18778098. https://pubmed.ncbi.nlm.nih.gov/18778098/
Petre GC, Francini-Pesenti F, Vitagliano A, Grande G, Ferlin A, Garolla A. Dietary Supplements for Erectile Dysfunction: Analysis of Marketed Products, Systematic Review, Meta-Analysis and Rational Use. Nutrients. 2023;15(17). PMID 37686709. https://pubmed.ncbi.nlm.nih.gov/37686709/
Kee CL, Ge X, Gilard V, Malet-Martino M, Low MY. A review of synthetic phosphodiesterase type 5 inhibitors (PDE-5i) found as adulterants in dietary supplements. J Pharm Biomed Anal. 2018;147:250-277. PMID 28903860. https://pubmed.ncbi.nlm.nih.gov/28903860/
Lee JH, Park HN, Park OR, Kim NS, Park SK, Kang H. Screening of illegal sexual enhancement supplements and counterfeit drugs sold in the online and offline markets between 2014 and 2017. Forensic Sci Int. 2019;298:10-19. PMID 30870700. https://pubmed.ncbi.nlm.nih.gov/30870700/
Rowland D, Tai W. A review of plant-derived and herbal approaches to the treatment of sexual dysfunctions. J Sex Marital Ther. 2003;29(3):185-205. PMID 12851124. https://pubmed.ncbi.nlm.nih.gov/12851124/
U.S. Food and Drug Administration. Sexual Enhancement and Energy Product Notifications. Medication Health Fraud Notifications, Center for Drug Evaluation and Research. https://www.fda.gov/drugs/medication-health-fraud-notifications/sexual-enhancement-and-energy-product-notifications
National Institutes of Health, Office of Dietary Supplements. Dietary Supplements for Exercise and Athletic Performance: Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/ExerciseAndAthleticPerformance-HealthProfessional/

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More about Jelly Force

Choosing a men's vitality supplementA nine-point checklist, applied to this product at the end. Jelly Force ingredientsThe nine names on this panel, and what each one was studied at. Jelly Force side effectsInteractions named one at a time, with the papers behind each.

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