Enough randomized trials have now been run on supplements for erections that researchers can rank them against each other. That changes the question from whether any of it works to which of it works.
Two recent systematic reviews with meta-analysis — Barbonetti 2024 in the Journal of Sexual Medicine and Ho 2026 in the Journal of Traditional and Complementary Medicine — found measurable effects for several nutraceutical and herbal ingredients, with L-arginine and icariin-bearing extracts among those studied most. Effects are modest and slower than a prescription, which is the honest trade.
For a long time the honest answer about supplements and erections was that nobody had run enough trials to say. That is no longer true.
In 2024 the Journal of Sexual Medicine published a systematic review and network meta-analysis of nutraceutical interventions for erectile dysfunction — the kind of analysis that only becomes possible once there are enough randomized trials to compare them against each other. A 2026 systematic review and meta-analysis of randomized controlled trials in the Journal of Traditional and Complementary Medicine did the same for herbal supplements specifically.
Neither found a supplement that performs like a prescription drug. Both found measurable effects. That gap is the whole subject of this page.
L-arginine is the raw material your body converts into nitric oxide, and nitric oxide is what relaxes the vessel walls so tissue can fill. That is the same pathway the prescription drugs act on, from a different point.
A 2024 trial published in the Journal of Pharmacopuncture tested a combination of ginseng, Tribulus terrestris and L-arginine on sexual performance in men, and it is one of several human studies feeding the meta-analyses above.
The reason to be measured about it: arginine supports the pathway. It does not force it. If the tissue at the end of that pathway has stopped expanding the way it used to, more raw material only goes so far — which is the argument the next section is about.
Epimedium is sold everywhere under the name horny goat weed, and most of what is written about it is folklore. The compound worth naming is icariin.
A 2026 review in Sexual Medicine Reviews set out the molecular mechanisms by which icariin acts in erectile dysfunction. It is mechanistic work rather than a clinical endpoint — meaning it explains how the compound could act, not how many men improved. That is a real limit and this page is not going to blur it.
What it does justify is why icariin-bearing extracts keep appearing in serious formulas rather than only in novelty ones.
Almost everything sold in this category works on blood flow. That is where the prescription drugs work too, and it is why men who have tried both often describe the same ceiling: something helps, but not the way it used to.
The argument VigorBoost makes is that blood flow was never the only variable. Tissue that has become less elastic does not expand the same way no matter how well it is supplied — and elasticity is a structural question, not a circulatory one.
That is why the formula leads with hydrolyzed equine collagen rather than with a vasodilator, and carries L-arginine and epimedium alongside it rather than instead of it. Whether that framing convinces you is a fair thing to weigh; it is at least a different bet than the twentieth nitric-oxide booster.
Three things, stated plainly, because a page that only lists wins is not worth trusting on the losses.
Yes, with the expectation set correctly. Two independent meta-analyses in 2024 and 2026 found measurable effects across several ingredients — that is a stronger footing than this category had five years ago, and stronger than most people assume.
What they did not find is anything that performs like a prescription. A supplement here is a potentiator: it adds to a system that is already working, and the size of what it adds depends on where you are starting — age, vascular health, sleep, what else is going on. That is why two men on the same bottle tell different stories.
What makes it reasonable to try is the asymmetry. Weeks of a daily capsule against the chance of a real change, with VigorBoost's 90-day guarantee sitting well past the point where you would know.
See the VigorBoost formula and pricing →No, and the meta-analyses say so. Barbonetti 2024 and Ho 2026 both found measurable effects for several ingredients, and neither found one matching a PDE5 inhibitor. The honest framing is a slower, smaller effect without a prescription.
The trials behind these reviews measured over weeks, not days. Judging a bottle after a weekend tells you nothing.
The plant is real and the compound worth naming is icariin. A 2026 review in Sexual Medicine Reviews set out how it acts. That is mechanistic evidence, not a count of men who improved — a genuine limit.
Ask your prescriber, and say specifically whether you take nitrates. That combination is the one that matters.
VigorBoost carries a 90-day money-back guarantee, which is longer than the window in which the trials measured anything.
This article is for general information and is not medical advice. Talk to a healthcare professional about your own situation, especially before combining a supplement with prescription medication.