Independent supplement ratingsUS and Canada · Updated weekly
A ratings desk for a category that has spent thirty years grading its own homework.
A ratings desk for a category that has spent thirty years grading its own homework.
Veg capsules · 250 mg · 60 servings
250mg root extract / 2,700mg red ginseng studied
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The right plant, the right part of it, at a fraction of the amount that was trialled. Red ginseng carries the better evidence in this category: a meta-analysis of seven randomised trials found an effect on erectile function, and its own authors called the studies too few, too small and too weak to settle the question. Those trials used 900 mg of red ginseng three times a day. This capsule holds 250 mg of root extract standardized to 4% ginsenosides. An extract is more concentrated than raw root, but the extraction ratio isn't published, so no one can honestly convert one figure into the other — which is why we score what's printed. At $0.17 a serving it's a cheap, clean, heavily-reviewed capsule that hasn't been shown to do this job at this dose.
250 mg of Panax ginseng root extract per capsule, standardized to 4% ginsenosides, produced by Euromed. Root — not stem and leaf, which cheaper ginseng products often use and the trials did not. The rest is cellulose and silica. What the panel doesn't give you is the extraction ratio, the one number you'd need to line this up against the 2,700 mg a day used in the erectile-function research. (Hong et al., 2002)
Someone who wants a standardized ginseng extract from a named European producer, and isn't buying it on the strength of the erectile-function trials. If those trials are the reason you're here, the form they used was red ginseng root at several grams a day, and the review of them stopped well short of a recommendation. (Jang et al., 2008)
Reviewed and fact-checked by the NFS editorial team · Last updated 08 Aug 2026