Last updated: · Originally published August 17, 2026 · Published by Eternal Elixir
Edited by Elaine Fletcher, Researcher
Quick answer: The ginseng benefits for men with the most human research behind them are small gains in sexual function and less mental fatigue. Support for immune markers rests on one long trial, and the evidence for testosterone, muscle and physical performance is mixed or missing. Most of the trials used Korean red ginseng, which is Panax ginseng root that has been steamed and dried, at 1 g to 3 g a day for 4 to 12 weeks. Our pick is Eternal Elixir Korean Panax Ginseng: 1,600 mg of Korean red Panax ginseng root extract per two-capsule serving, standardized to at least 5% ginsenosides, at $1.00 per serving.
Eternal Elixir makes Korean Panax Ginseng, and it is our pick in this guide. That finished formula has not been tested in a clinical trial, so every benefit below comes from studies of other ginseng preparations. We give each outcome an evidence level and spell out what the research has not shown. You can read how we grade evidence and write reviews.
Ginseng benefits for men: the evidence at a glance
Five outcomes come up when men search for ginseng. The table orders them by the quality of the human evidence, strongest first.
| Outcome | Best human evidence | What it found | Evidence level |
|---|---|---|---|
| Sexual function | Cochrane review of 9 randomized trials, 587 men, up to 12 weeks | Small gains on erection questionnaires, and more men reported being able to have intercourse | Moderate to low |
| Mental fatigue and focus | Randomized trials in 90 and 30 adults | Less mental fatigue, while total fatigue scores did not beat placebo | Limited |
| Immune markers | One 180-day randomized trial, 119 adults | Higher IgA and immune questionnaire scores than placebo | Limited |
| Testosterone | Two small trials with conflicting results | A 12-week trial found no difference from placebo, and a 4-week pilot found a rise | Not established |
| Physical performance | Meta-analysis of 8 trials | No difference from placebo | Not supported |
One pattern runs through all five rows. The trials are small and short, and most tested their own ginseng preparation. A result from one product is a fair guide to another only when the species, preparation and dose are close.
Sexual function: the best-studied benefit
Most of the male research on Panax ginseng measures erectile function with a standard questionnaire, the International Index of Erectile Function (IIEF). Most of these trials used Korean red ginseng.
Two early trials set the pattern. In a crossover study published in The Journal of Urology in 2002, 45 men took 900 mg of Korean red ginseng three times a day for 8 weeks, and their IIEF scores were higher on ginseng than on placebo (Hong and colleagues). In a Brazilian trial published in 2007, 60 men took 1,000 mg three times a day for 12 weeks. Their IIEF-5 scores rose from 16.4 to 21.0 on ginseng, with no change on placebo (de Andrade and colleagues).
A 2008 meta-analysis in the British Journal of Clinical Pharmacology pooled six placebo-controlled trials with 349 men and reported a risk ratio of 2.40 in favor of red ginseng (Jang and colleagues). The same authors rated the trials as low quality on average. They wrote that there were too few trials, with too few men, to draw firm conclusions.
The most careful summary is the 2021 Cochrane review (Lee and colleagues). It included 9 randomized trials with 587 men aged 20 to 70. Every trial compared ginseng with placebo, and none followed men for longer than 12 weeks. On the IIEF erectile function scale, which runs from 1 to 30, men on ginseng gained 3.52 points more than men on placebo. The reviewers called that a trivial effect because it fell short of the 4-point change they set as the smallest difference a man would notice. More men on ginseng said they were able to have intercourse (risk ratio 2.55). The review found little or no difference in side effects between ginseng and placebo.
Evidence level: moderate to low. Several trials point the same way, but the change in questionnaire scores is small and the studies are short. They enrolled men who already had erection problems, so they say little about men with no complaints. The Cochrane reviewers found no trial that compared ginseng with prescription medicines.
If erection problems are new or keep coming back, talk to a doctor before you try any supplement. Erectile dysfunction can have medical causes that need checking, and no supplement replaces that visit.
A 2013 review in Spermatogenesis by Leung and Wong is often quoted on this topic. It links ginseng with libido and mating behavior in animal studies, cites human case-control studies that agree, and describes reports of better sperm quality and count. It also summarizes lab and animal work in which ginsenosides raise nitric oxide in blood vessel tissue, which relaxes the smooth muscle involved in erection. Much of that review rests on animal and lab work, which cannot tell us what happens in men.
Energy, focus and mental fatigue
Ginseng is often sold as an energy supplement. The human trials back a narrower idea: it may help with the mental side of tiredness.
In a 2013 randomized trial in PLoS ONE, 90 adults with unexplained long-term fatigue (21 men and 69 women) took 1 g or 2 g a day of a Panax ginseng extract, or a placebo, for 4 weeks (Kim and colleagues). Total fatigue scores fell, but not by significantly more than on placebo. Mental fatigue scores improved significantly compared with placebo. Only the 2 g dose also beat placebo on a second fatigue rating, a visual analogue scale.
A 2005 crossover study in the Journal of Psychopharmacology gave 30 healthy young adults single doses of 200 mg or 400 mg of a standardized Panax ginseng extract, G115, before a long run of mental arithmetic tests (Reay and colleagues). The 200 mg dose improved serial-subtraction scores and lowered self-rated mental fatigue. Blood glucose also fell after both doses, which matters if you take medicine that lowers blood sugar.
Pooled results are less clear. A 2023 meta-analysis of 19 randomized trials found no significant overall drop in fatigue with ginseng, although general fatigue that was not tied to a specific illness did improve (Li and colleagues). A 2016 meta-analysis found a small fatigue benefit across four trials (Bach and colleagues).
Evidence level: limited. At most, expect a small change in how mentally tired you feel. Ginseng contains no caffeine and does not act as a stimulant, so a pre-workout jolt is the wrong thing to expect from it.
Immune function: one long trial
A 180-day randomized, double-blind trial in the Journal of Ginseng Research in 2024 enrolled 119 adults who scored low on an immune health questionnaire (Yang and colleagues). The ginseng group took six Korean red ginseng capsules a day, about 2.8 g of red ginseng powder. At 90 and 180 days they had higher immune questionnaire scores and higher IgA than the placebo group. IgA is the antibody found in the lining of the gut and airways. No adverse reactions were reported in either group.
Evidence level: limited. Six months is a long run for a supplement trial, and that is a real strength. It is still one trial, and only 32 of the 104 people analyzed were men. Questionnaire scores and lab markers also do not show that anyone caught fewer colds.
Does ginseng raise testosterone?
Testosterone is the reason many men buy ginseng, and it has the weakest support of the five outcomes. The trials that measured hormones disagree.
In the 2007 de Andrade trial above, 3,000 mg a day of Korean red ginseng for 12 weeks improved erection scores, yet serum testosterone ended up no different from placebo. In a 2016 pilot trial, 62 men with metabolic risk factors took 3 g a day of red ginseng or a placebo for 4 weeks, and total testosterone rose more on ginseng (Jung and colleagues). That pilot was small and short, and every man in it had metabolic problems, so it does not show what ginseng does for healthy men.
Animal studies are more positive, and that is where many “ginseng boosts testosterone” claims start. The nitric oxide findings from lab work point to blood flow rather than hormones, and none of the human trials above measured that pathway. What the de Andrade data do show is that erection scores can improve while testosterone stays flat.
Evidence level: not established. If hormone support is your main goal, our comparison of natural testosterone boosters covers ingredients that have been studied specifically for testosterone, including Tongkat Ali 200:1 extract and shilajit capsules.
Muscle, strength and physical performance
A 2016 meta-analysis in the Journal of Korean Medical Science pooled 12 randomized trials with 630 participants (Bach and colleagues). Across the 8 trials that tested physical performance, ginseng made no difference compared with placebo. The authors concluded that the evidence was too thin to support ginseng for fatigue or performance, because the trials were few and small. The NCCIH fact sheet on Asian ginseng reaches the same view: most research shows it does not improve athletic performance.
Evidence level: not supported. For strength or training output, look at ingredients studied for it. Our comparison of turkesterone and creatine covers the human data on both, and a separate review looks at shilajit benefits for men.
Is ginseng good for older men?
Much of the male research was done in middle-aged and older men, and the Cochrane review covered men up to 70. A 2026 trial in The World Journal of Men’s Health gave 116 men aged 40 or older 700 mg a day of a Panax ginseng berry extract, or a placebo, for 8 weeks (Park and colleagues). The men were enrolled because they reported lower libido or weaker erections. The ginseng group improved more on the Aging Males’ Symptoms scale and on IIEF scores. That study used the berry rather than the root, so its result does not transfer directly to root products like ours.
Age matters most for safety. Older men are more likely to take blood thinners or diabetes medicines, and ginseng may interact with both. Ask your doctor or pharmacist first if you take either.
How much ginseng per day for men?
There is no single established dose. The table lists what the trials in this guide used, next to our label serving. Prices and label details are as of Sep 2026.
| Study or product | Preparation | Daily amount | Length |
|---|---|---|---|
| Eternal Elixir Korean Panax Ginseng (view product) | Korean red Panax ginseng root extract, minimum 5% ginsenosides | 1,600 mg (2 capsules), $1.00 per serving | Follow the label |
| Hong 2002, sexual function | Korean red ginseng | 2,700 mg (900 mg three times) | 8 weeks |
| de Andrade 2007, sexual function | Korean red ginseng | 3,000 mg (1,000 mg three times) | 12 weeks |
| Yang 2024, immune markers | Korean red ginseng capsules | About 2.8 g | 180 days |
| Kim 2013, fatigue | Panax ginseng ethanol extract | 1 g or 2 g | 4 weeks |
| Jung 2016, hormones | Red ginseng | 3 g | 4 weeks |
| Park 2026, older men | Panax ginseng berry extract | 700 mg | 8 weeks |
| Reay 2005, mental tasks | Standardized extract (G115) | 200 mg, single dose | One test day |
Our 1,600 mg serving sits between the 1 g and 2 g doses in the fatigue trial and below the 2,700 mg to 3,000 mg used in the sexual-function trials. Those trials used their own preparations and did not all report ginsenoside content, so any milligram match is approximate. Follow the serving on your label, and talk to your doctor before taking more than it suggests. Our report on trial doses versus US label doses runs the same comparison across other ingredients.
How to read a ginseng label
Two numbers on a ginseng label matter. The milligram figure tells you how much material is in a serving. The standardization percentage tells you how much of that material is ginsenosides, the saponins most of the research focuses on. Multiply the two to get ginsenosides per serving.
On our label, 1,600 mg standardized to a minimum of 5% ginsenosides works out to at least 80 mg of ginsenosides per two-capsule serving. A root-powder capsule with no percentage printed on it gives you no way to do that sum.
An extract ratio such as 10:1 describes how much raw root went into the extract. On its own it says nothing about ginsenoside content, so look for the percentage as well.
Check the species too. Panax ginseng, sold as Asian or Korean ginseng, is the plant in almost all of the male research. American ginseng (Panax quinquefolius) is a related species with a different ginsenoside profile. “Siberian ginseng” (Eleutherococcus senticosus) is a different plant altogether. The same label checks apply to any longevity supplement you are weighing up.
Add Korean Panax Ginseng to cart · $44.99
Side effects, interactions and who should skip ginseng
Short-term use of Asian ginseng by mouth, up to 6 months, appears to be safe for most people, according to the NCCIH fact sheet on Asian ginseng. Questions remain about its long-term safety.
- Trouble sleeping is the most common side effect. If it happens to you, take your serving in the morning.
- Ginseng may lower blood sugar. If you take diabetes medicine, talk to your doctor before you start.
- It may interfere with blood clotting, so check with your doctor first if you take a blood thinner.
- It may worsen autoimmune conditions. Ask your doctor before using it if you have one.
- Some experts advise against it during pregnancy and breastfeeding and for children.
- Uncommon reports include severe rash, liver damage and severe allergic reactions. Stop taking it and see a doctor if any of these appear.
In the Cochrane review, side effects were not clearly more common on ginseng than on placebo. If you have checked your label, stayed within the studied range and noticed nothing after 8 to 12 weeks, ginseng may simply not work for you. Taking more will not fix that. Our guide to turkesterone side effects applies the same cautious reading to another popular men’s supplement.
Where Eternal Elixir Korean Panax Ginseng fits
Eternal Elixir Korean Panax Ginseng is Korean red Panax ginseng root extract, standardized to a minimum of 5% ginsenosides, at 1,600 mg per two-capsule serving. A bottle holds 90 capsules, or 45 servings, for $44.99, which comes to $1.00 per serving. The only other listed ingredients are rice flour and a cellulose capsule.
We chose it as our pick because the label names the species and plant part and states both the standardization and the full dose per serving. Those are the details you need to line a bottle up against the studies above. The finished formula has not been clinically tested, and the product page says so as well.
Who it suits: men who want to try Panax ginseng for sexual function or mental fatigue, can commit to 8 to 12 weeks of daily use, and want a label they can check against the research.
Who it doesn’t suit: men looking for a testosterone boost, a stimulant or a strength aid, and anyone taking blood thinners or diabetes medicines who has not cleared it with a doctor.
Buying more than one bottle saves 10% on two, 15% on three and 20% on five, and US orders over $100 ship free. If hormone support is also on your list, you can add our Tongkat Ali 200:1 extract to the same order below. To see how our bottle compares with other brands on standardization and price per serving, read our comparison of seven ginseng supplements. For uses beyond men’s health, our ginseng benefits and dosage guide covers the wider research.
Frequently asked questions
How long does it take for ginseng to kick in?
It depends on the outcome. In one lab study, a single 200 mg dose of a standardized extract changed mental test scores starting an hour after the dose. The fatigue trials ran 4 weeks and the sexual-function trials ran 8 to 12 weeks. Give it at least 8 weeks of daily use before you judge it.
Is ginseng good for older men?
Most of the male trials enrolled middle-aged and older men, so the research applies well to them. The bigger age-related issue is medication. Ginseng may lower blood sugar and interfere with blood clotting, so men on diabetes medicines or blood thinners should ask their doctor first.
What is better, ashwagandha or ginseng?
They have been tested for different goals. Panax ginseng research in men centers on sexual function and mental fatigue. Ashwagandha has been tested on hormones in men more directly. In a 2019 crossover trial that enrolled 57 overweight men aged 40 to 70, an ashwagandha extract providing 21 mg of withanolide glycosides a day for 8 weeks raised testosterone 14.7% more than placebo, with no difference in fatigue, vigor or sexual well-being (Lopresti and colleagues). Choose the one whose evidence matches your goal. We do not sell ashwagandha.
How much ginseng per day for men?
The trials in this guide used 1 g to 3 g a day of Korean red ginseng or ginseng extract, and 200 mg of a standardized extract in short mental-performance studies. Our label serving is 1,600 mg in two capsules, standardized to at least 5% ginsenosides. Follow your product’s label rather than copying a trial dose.
Does ginseng increase testosterone?
Not reliably. A 12-week trial of 3,000 mg a day found no difference in testosterone from placebo, while a 4-week pilot in 62 men with metabolic problems found a rise. A product sold as a ginseng testosterone booster is claiming more than the research shows.
Can you take ginseng every day?
Yes. Daily use is how it was studied, for 4 weeks to 6 months. Short-term use of up to 6 months appears safe for most people, but long-term safety is less clear. Take it in the morning if it affects your sleep, and stop if you notice changes in sleep, blood pressure or digestion.
What is the best ginseng supplement for men?
Our pick is Eternal Elixir Korean Panax Ginseng, which we make. It uses Korean red Panax ginseng root, the type used in most of the male trials, states a minimum of 5% ginsenosides and provides 1,600 mg per two-capsule serving at $1.00 per serving. Whatever you buy, look for the species name, a standardization percentage and a dose you can compare with the research.
Add Korean Panax Ginseng to cart · $44.99
The bottom line on ginseng for men
Panax ginseng has a small, consistent signal for sexual function and some support for mental fatigue. It has one long immune trial, mixed testosterone data and no effect on physical performance. Those are narrow benefits, and they show up after weeks of daily use at doses in the gram range. If that matches what you want, choose a bottle that states the species, the standardization and the dose, and give it 8 to 12 weeks.
Browse the rest of our range in the Eternal Elixir shop.
Sources
- Lee HW, Lee MS, Kim TH, et al. Ginseng for erectile dysfunction. Cochrane Database of Systematic Reviews, 2021. PubMed 33871063
- Jang DJ, Lee MS, Shin BC, Lee YC, Ernst E. Red ginseng for treating erectile dysfunction: a systematic review. British Journal of Clinical Pharmacology, 2008. PubMed 18754850
- Hong B, Ji YH, Hong JH, Nam KY, Ahn TY. A double-blind crossover study evaluating the efficacy of Korean red ginseng in patients with erectile dysfunction: a preliminary report. Journal of Urology, 2002. PubMed 12394711
- de Andrade E, de Mesquita AA, Claro JA, et al. Study of the efficacy of Korean Red Ginseng in the treatment of erectile dysfunction. Asian Journal of Andrology, 2007. PubMed 16855773
- Leung KW, Wong AS. Ginseng and male reproductive function. Spermatogenesis, 2013. PubMed 24381805
- Kim HG, Cho JH, Yoo SR, et al. Antifatigue effects of Panax ginseng C.A. Meyer: a randomised, double-blind, placebo-controlled trial. PLoS ONE, 2013. PubMed 23613825
- Reay JL, Kennedy DO, Scholey AB. Single doses of Panax ginseng (G115) reduce blood glucose levels and improve cognitive performance during sustained mental activity. Journal of Psychopharmacology, 2005. PubMed 15982990
- Li X, Yang M, Zhang YL, et al. Ginseng and ginseng herbal formulas for symptomatic management of fatigue: a systematic review and meta-analysis. Journal of Integrative and Complementary Medicine, 2023. PubMed 36730693
- Bach HV, Kim J, Myung SK, Cho YA. Efficacy of ginseng supplements on fatigue and physical performance: a meta-analysis. Journal of Korean Medical Science, 2016. PubMed 27822924
- Yang Y, Li J, Zhou S, et al. Enhanced immunity effect of Korean Red Ginseng capsule: a randomized, double-blind and placebo-controlled clinical trial. Journal of Ginseng Research, 2024. PubMed 39263305
- Jung DH, Lee YJ, Kim CB, et al. Effects of ginseng on peripheral blood mitochondrial DNA copy number and hormones in men with metabolic syndrome: a randomized clinical and pilot study. Complementary Therapies in Medicine, 2016. PubMed 26860800
- Park SY, Lee YS, Heo I, et al. Efficacy and safety of ginseng berry extract (SIRTBERRY) in treating andropause symptoms: a randomized, double-blind, placebo-controlled clinical trial. The World Journal of Men’s Health, 2026. PubMed 40583012
- 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. American Journal of Men’s Health, 2019. PubMed 30854916
- National Center for Complementary and Integrative Health. Asian ginseng. nccih.nih.gov
- Eternal Elixir. Korean Panax Ginseng product page: label, serving, price and evidence notes (US, September 2026).
