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Part of our Vivalis overview. Last checked October 28, 2026.
Does Vivalis really work? There is no evidence that it does, because no published trial has tested Vivalis itself, and the label puts 9 of its 12 ingredients in a 545 mg proprietary blend with no individual amounts[1]. That leaves about 60 mg per blend item on average.
For ginseng, the most studied herb in the blend, a Cochrane review of 9 trials in 587 men found only a "trivial effect" on erection scores[5].
Does Vivalis work? The short answer
We cannot say Vivalis works, and the vendor has not shown that it does. The claims rest on ingredient research, and that research does not match the label in dose, form or, in two cases, the ingredient list itself.
What can be concluded:
- No study of the Vivalis formula exists in what we checked. The vendor's "4.98/5 based on 2000+ reviews" has no source[2].
- The sales page names tongkat ali and saw palmetto. Neither is on the only label we found[1].
- The blend includes DHEA, a hormone precursor, at an undisclosed dose.
- The vendor says Vivalis is now sold as "Size Booster Pro"[4]. Any size claim is the vendor's own, and we found no evidence for it.
What cannot be concluded is whether one capsule holds enough of anything to matter.
Which evidence levels should you not confuse?
Supplement marketing often presents a lab finding as if it were a product result. These are four different levels, and Vivalis reaches only the first two.
Plausibility
A herb has a believable mechanism in cells or animals. Horny goat weed sits here: its erection data come from rats, and reviews say human proof is lacking[9].
Ingredient trials
A single ingredient was tested in people at a known dose. Ginseng and tribulus have trials at this level, at doses far above what a 545 mg blend split 9 ways can contain.
Finished-product trial
The exact formula, at the label dose, against a placebo. We found none for Vivalis. The vendor's claim that "most people start feeling a difference within the first week"[2] is not backed by one.
Replication
A second independent team gets the same result. Without the first trial, there is nothing to repeat. The one positive tribulus trial for ED, Kamenov 2017, had sponsor staff among its authors[7].
Vivalis claims vs what the evidence supports
Each claim below is the vendor's wording on its sales pages, checked October 28, 2026, set against what the ingredient research shows.
| Vendor claim | Reasonable reading | Limitation |
|---|---|---|
| Horny goat weed "Enhances blood flow"[2] | Seen in rats and lab work | No adequate human trial for erections[9] |
| Tribulus "Naturally boosts testosterone levels"[2] | Not supported | An 8-trial meta-analysis found no change in total testosterone[6] |
| Eurycoma (tongkat ali) "boosts libido"[2] | Limited testosterone data | Not on the label found; ED meta-analysis not significant[10] |
| Saw palmetto "Increases stamina and enhances sexual desire"[2] | No support in what we read | Not on the label found; NCCIH covers it for prostate symptoms, where it showed little or no benefit[13] |
| FDA badge on the sales video page[3] | Incorrect | FDA does not approve supplements; the label says the statements were not evaluated by the FDA |
| "Over 20 Carefully-Selected Ingredients"[2] | Does not match | The label lists 12[1] |
The ingredient-by-ingredient detail is on our Vivalis ingredients page.
Which ingredients matter most?
Ginseng and tribulus have the most human data, and both were tested at doses Vivalis cannot match inside its blend. Dose, form and population all differ from the studies:
- Korean ginseng. One trial used 900 mg three times daily, 2.7 g a day[14]. Vivalis has 545 mg for all 9 blend items. Even at that dose, Cochrane rated the effect on ED "trivial"[5].
- Tribulus. The positive trials used 750 to 1,500 mg a day of an extract standardized for saponins[7]. Vivalis lists plain fruit, no standardization, no amount. A 30-day trial at 800 mg a day found it no better than placebo[15].
- Niacin. The ED trial used up to 1,500 mg a day in men with high cholesterol[12]. Vivalis has 12 mg.
- DHEA. A small 1999 trial in 40 men found better erection scores at 50 mg a day[16], but a larger trial at 50 mg twice daily found no difference from placebo[17], and a 25-trial meta-analysis found no effect on sexual function[18]. The Vivalis dose is hidden.
- Muira puama. The only trial we found was open-label, in women, combined with ginkgo, with no placebo[11].
- Testosterone overall. A 2024 review of 52 studies found most "booster" ingredients "fail to increase total testosterone"[8].
What results are realistic to expect?
Based on what trials measured, the realistic expectation is no noticeable change, and at best a small one. In the tribulus meta-analysis, erection scores rose 3.23 points on a 25-point scale compared with placebo, using standardized extract for weeks[6]. The Kamenov trial ran 12 weeks[7].
Ginseng's average gain stayed below the 4-point change that patients notice[5]. No trial measured penis size, and any size claim attached to the "Size Booster Pro" name is the vendor's alone.
If you try it, judge it by about day 45, inside the 60-day refund window. Our guide to taking Vivalis has a simple tracking log.
When should you see a doctor instead?
See a doctor before buying any sexual health supplement if erection or desire problems are new, getting worse or affecting your life. Go right away, or call 911, if you have:
- Chest pain or shortness of breath, during sex or at rest
- An erection lasting more than 4 hours
- Sudden loss of vision or hearing
- Blood in urine or semen, or new trouble passing urine
- A lump or pain in the testicles
Also talk to a doctor first if you take nitrates, blood thinners, blood pressure or hormone medicine, or have prostate concerns or a hormone-sensitive condition, because the blend contains DHEA and herbs with drug cautions. Competitive athletes should know WADA bans DHEA. The details are on our Vivalis side effects page.
Evidence conclusion
Here is our assessment, as of October 28, 2026:
| Decision question | Current assessment |
|---|---|
| Has Vivalis been tested in a trial? | No trial found |
| Can you check the doses? | No: 9 items hidden in a 545 mg blend |
| Does the label match the sales page? | No: tongkat ali and saw palmetto missing, 12 ingredients not 20 |
| Strongest ingredient evidence | Small effects for ginseng and tribulus at much higher doses |
| Safe for everyone? | No: contains DHEA; ask a doctor first |
If you still want to try it, buy one bottle, follow the label on what arrives and keep the refund dates in view. Our method page explains how we checked this.
Back to the Vivalis overview.
Frequently asked questions
What is Vivalis used for?
The vendor sells Vivalis as a men's health capsule and its bottle says it boosts performance, increases stamina and supports virility. Those are vendor claims. No published trial has tested the Vivalis formula for any of them.
Is Vivalis safe and effective?
Neither has been shown. No trial tested the product, and its 545 mg blend hides the dose of every herb, including DHEA, a hormone precursor. Men with prostate concerns or hormone-sensitive conditions, and anyone on prescription medicine, should ask a doctor first.
Does Vivalis work for men with ED?
There is no evidence that it does. Ginseng and tribulus showed small effects on erection scores in trials, but at doses far above what a 545 mg blend of 9 items can hold. Men with ED should see a doctor, who can look for a cause and discuss options.
How long does Vivalis take to work?
The vendor says most people feel a difference within the first week, but no study supports that. Ingredient trials ran 4 to 12 weeks. If you try it, judge it by about day 45 so the 60-day refund window is still open.
Is Vivalis the same as Size Booster Pro?
The vendor says Vivalis is now sold as Size Booster Pro. We did not find a label for that formula, so it may differ. Size claims under that name are the vendor's own; no trial we found measured size.
Sources
- Vivalis Supplement Facts label (Spanish). govivalis.com, read October 28, 2026.
- Vivalis sales and order page. govivalis.com, read October 28, 2026.
- Vivalis video sales page. govivalis.com, read October 28, 2026.
- Vivalis is now Size Booster Pro. govivalis.com, read October 28, 2026.
- Ginseng for erectile dysfunction, Cochrane review (PMID 33871063). PubMed, read October 2, 2026.
- Tribulus terrestris for erectile dysfunction, meta-analysis of 8 RCTs (PMID 40360723). PubMed, read October 20, 2026.
- Kamenov 2017, Tribulus terrestris in men with mild or moderate ED (PMID 28364864). PubMed, read October 20, 2026.
- Morgado 2024, systematic review of testosterone booster ingredients (PMID 37697053). PubMed, read October 2, 2026.
- Review of Epimedium and erectile function (PMID 35958901). PubMed, read October 19, 2026.
- Eurycoma longifolia for erectile dysfunction, meta-analysis (PMID 26365449). PubMed, read October 2, 2026.
- Herbal vX (muira puama and ginkgo) open-label study (PMID 11186145). PubMed, read October 20, 2026.
- Ng 2011, niacin in men with ED and dyslipidemia (PMID 21810191). PubMed, read October 19, 2026.
- Saw Palmetto: Usefulness and Safety. National Center for Complementary and Integrative Health, read October 2, 2026.
- Hong 2002, Korean red ginseng for erectile dysfunction (PMID 12394711). PubMed, read October 2, 2026.
- Santos 2014, Tribulus terrestris for ED (PMID 24630840). PubMed, read October 20, 2026.
- DHEA in men with erectile dysfunction, randomized placebo-controlled trial (PMID 10096389). PubMed, read October 28, 2026.
- DHEA in men with sexual dysfunction and low androgens, randomized trial (PMID 19883295). PubMed, read October 28, 2026.
- DHEA in older men, meta-analysis of 25 trials (PMID 23824417). PubMed, read October 28, 2026.
This page is general information, not medical advice. Dietary supplements are not reviewed by the FDA for safety or effectiveness before they are sold and are not intended to diagnose, treat, cure or prevent any disease. Talk to your doctor before taking any supplement, especially if you are pregnant, nursing, take medication or have a health condition.
