Sacred Lotus Médecine Chinoise et Intégrative

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Sep 2026

Supplement: Panax Ginseng (ginseng asiatique)

My Plan

Le ginseng asiatique, appelé Ren Shen en médecine chinoise, est utilisé depuis longtemps contre l'épuisement et la fatigue profonde. Les essais modernes sont pour la plupart petits, hétérogènes, et souvent financés par les fabricants de ginseng.

Ils pointent vers les mêmes usages, mais les effets sont plus faibles : une aide modeste contre la fatigue, une meilleure fonction érectile que le placebo, une glycémie à jeun inférieure d'environ 6 mg/dL (0,31 mmol/L), et des gains cognitifs qui s'estompent après une dose unique. Les essais partagent un même problème : la teneur en ginsénosides varie largement d'un produit à l'autre, si bien que deux flacons étiquetés ginseng peuvent différer nettement en force.

Cost
Low to MidLow to Mid · Standardized root extract · daily · fatigue and erectile effects show over weeks
Effort
EasyEasy
Results In
Weeks to MonthsWeeks to Months

Findings & Outcomes

What It Is

Asian ginseng is the root of Panax ginseng, a slow-growing plant native to the mountains of Korea, northeastern China, and eastern Russia. Chinese medicine calls it Ren Shen. Its activity is credited to a family of saponins called ginsenosides, the compounds most of the research tracks.

Three plants are often confused with it:

  • Siberian eleuthero, sometimes sold as Siberian ginseng, is not a true ginseng at all.
  • American ginseng, Panax quinquefolius, is a close cousin but a distinct root.
  • Korean red ginseng is the same Panax ginseng root steamed and dried, a process that changes its chemistry and how the tradition uses it.

Anatomy of the Practice

1The ginsenosides

Laboratory work traces the ginsenosides to four systems at once: stress hormones, inflammation, blood-vessel signaling, and blood sugar handling.

2Over days and weeks

Taken daily, ginseng is used for tiredness, low stamina, and recovery from illness. In the trials the effect size is modest and uneven.

What It Does

A 2018 review of 10 randomized trials of Asian and American ginseng found modest evidence the root reduced fatigue, including in people worn down by chronic illness and cancer treatment. Those trials were small and varied in design. A separate trial of 90 adults with idiopathic chronic fatigue tested Panax ginseng at 1 to 2 grams a day. It did not clearly beat placebo on the overall fatigue score. Mental fatigue improved, though, and at 2 grams a day people rated their tiredness lower on a sliding 0-to-10 scale. The broader fatigue findings show where the root ranks among the options.

A 2008 review of seven randomized trials concluded Korean red ginseng outperformed placebo for erectile function. A meta-analysis pooled six placebo-controlled trials, 349 men in total. Men taking ginseng were about 2.4 times as likely as those on placebo to report improvement. A double-blind crossover trial in 2002 recorded gains on the International Index of Erectile Function at 900 mg three times a day. These trials are small and short, several come from the same region and research groups, and larger independent trials are still lacking.

For blood sugar, a 2014 meta-analysis of 16 randomized trials found ginseng lowered fasting blood glucose by about 6 mg/dL (0.31 mmol/L). It showed no clear effect on longer-term markers like HbA1c. That blood sugar signal is small next to diet and movement, since type 2 diabetes tracks closely with ultra-processed food built on sugar, fat, and salt.

The evidence for a mental boost is weaker than the popular claim suggests. A single 400 mg dose of a standardized extract improved a working-memory task and calmness ratings in 30 healthy young adults in a 2010 study. A 2010 Cochrane review of nine longer-term trials judged them too few and too inconsistent to support ginseng for memory or thinking.

For the common cold, a 2011 review pooled five trials, four testing American ginseng and one testing Asian ginseng, the Ginsana G115 extract. The American-ginseng trials cut colds by about 25% in one and shortened them by about 6.2 days in two. The single Asian-ginseng trial showed the largest drop in the risk of catching a cold, and the review still judged the overall evidence insufficient. Direct evidence for Panax ginseng rests on that one small trial.

Most of these trials were small and mixed in design, and many were funded by companies that sell ginseng. Industry funding raises the risk of bias, and independent replication is thin.

One problem runs under all of it: in a single analysis of 25 products, the active ginsenoside content varies 15- to 36-fold between commercial products.

The Research & Studies

Everything here is based on the research we have collected and checked, sorted into groups and ordered with the strongest evidence first. Click any claim to open the studies behind it.

Energy And Fatigue

Un soulagement modeste de la fatigue dans dix essais sur le ginseng asiatique et américainEmerging
In plain terms

Le ginseng semble atténuer la fatigue chez certaines personnes, dans une faible mesure, l'effet se renforçant sur plusieurs semaines.

In detail

Une revue systématique de dix essais sur le ginseng asiatique et américain a trouvé des preuves modestes que le ginseng réduisait la fatigue, notamment chez les personnes affaiblies par une maladie chronique et un traitement anticancéreux. Un essai randomisé séparé portant sur 90 adultes souffrant de fatigue chronique idiopathique a montré que le Panax ginseng à 1 à 2 g par jour ne surpassait pas clairement le placebo sur le score global de fatigue, bien que la fatigue mentale se soit améliorée et que la dose de 2 g ait réduit le score de fatigue sur échelle visuelle analogique. Measured in: Adults with fatigue, including cancer-related and chronic-illness fatigue and idiopathic chronic fatigue, across small randomized trials. Les essais étaient petits et hétérogènes en termes de conception et de dose, et plusieurs étaient financés par des fabricants de ginseng, de sorte que l'ampleur de l'effet est incertaine bien que la direction soit cohérente.

Who this may not transfer to:The review and the antifatigue trial enrolled both men and women, so the finding applies across sexes.

The studies · 2

Arring et al., Ginseng as a Treatment for Fatigue: A Systematic Review · J Altern Complement Med 2018;24(7):624-633

Kim et al., Antifatigue effects of Panax ginseng C.A. Meyer: a randomised, double-blind, placebo-controlled trial · PLoS One 2013;8(4):e61271

Sexual Function

Meilleure fonction érectile que le placebo dans sept essaisEmerging
In plain terms

Le ginseng rouge coréen a surpassé le placebo pour les troubles érectiles dans de petits essais, les hommes étant environ 2.4 fois plus susceptibles de rapporter une amélioration, bien que des études plus larges et plus indépendantes soient encore nécessaires.

In detail

Une revue systématique de sept essais randomisés a conclu que le ginseng rouge coréen était plus efficace que le placebo pour la fonction érectile, une méta-analyse de six essais contrôlés contre placebo (n = 349) montrant que les hommes avaient environ 2.4 fois plus de chances de rapporter une amélioration, et un essai croisé en double aveugle a trouvé une amélioration sur l'International Index of Erectile Function à environ 900 mg trois fois par jour. Measured in: Men with erectile dysfunction across small, mostly short randomized trials. Les essais sont petits et courts, plusieurs proviennent de la même région et des mêmes groupes de recherche, et une confirmation indépendante plus large fait encore défaut.

Who this may not transfer to:Erectile function is a male outcome, so the trials enrolled men by design; the finding does not transfer to another sex.

The studies · 2

Jang et al., Red ginseng for treating erectile dysfunction: a systematic review · Br J Clin Pharmacol 2008;66(4):444-450

Hong et al., A double-blind crossover study evaluating the efficacy of Korean red ginseng in patients with erectile dysfunction · J Urol 2002;168(5):2070-2073

Blood Sugar

Glycémie à jeun d'environ 6 mg/dL (0.31 mmol/L) plus basse, sans changement de l'HbA1cEmerging
In plain terms

Le ginseng réduit légèrement la glycémie à jeun, d'environ 6 mg/dL (0.31 mmol/L), mais il n'a pas clairement modifié les mesures à long terme qui comptent le plus pour le diabète.

In detail

Une méta-analyse de seize essais randomisés contrôlés a montré que le ginseng réduisait la glycémie à jeun d'environ 6 mg/dL (0.31 mmol/L) par rapport au contrôle, sans effet clair sur les marqueurs glycémiques à long terme tels que l'HbA1c ou sur l'insuline à jeun. Measured in: Adults with and without diabetes across randomized controlled trials of ginseng. La réduction de la glycémie à jeun était faible et les essais étaient hétérogènes quant au type et à la dose de ginseng utilisés, et l'absence d'effet clair sur l'HbA1c limite ce que cela signifie pour le contrôle réel du diabète.

Who this may not transfer to:Trials enrolled adults of both sexes, so the finding applies across sexes.

The study · 1

Shishtar et al., The effect of ginseng (the genus panax) on glycemic control: a systematic review and meta-analysis of randomized controlled clinical trials · PLoS One 2014;9(9):e107391

Cognition

Une seule dose de 400 mg a amélioré la mémoire de travail et le calme chez 30 jeunes adultesPreliminary
In plain terms

Une seule dose de 400 mg d'un extrait de ginseng standardisé a légèrement affiné la mémoire de travail et laissé 30 jeunes adultes en bonne santé se sentant plus calmes dans une petite étude.

In detail

Une seule dose de 400 mg d'un extrait standardisé de Panax ginseng (G115) a amélioré une tâche de mémoire de travail (arithmétique mentale) et les évaluations subjectives du calme chez 30 jeunes adultes en bonne santé dans un petit essai croisé randomisé, tandis qu'une dose de 200 mg a ralenti la même tâche. Measured in: Healthy young adults in a single small randomized crossover trial of acute dosing. Il s'agit d'un seul petit essai d'une dose unique chez de jeunes personnes en bonne santé, et non d'un test de prise de ginseng dans le temps, il dit donc peu de chose sur un bénéfice cognitif durable.

Who this may not transfer to:The crossover trial enrolled healthy young adults of both sexes; it does not test older adults or people with cognitive complaints.

The study · 1

Reay et al., Panax ginseng (G115) improves aspects of working memory performance and subjective ratings of calmness in healthy young adults · Hum Psychopharmacol 2010;25(6):462-471

Neuf essais, trop peu nombreux et inconsistants pour montrer un bénéfice sur la mémoirePreliminary · mixed
In plain terms

Lorsque les chercheurs ont regroupé les neuf études sur la prise de ginseng au fil du temps pour la mémoire, il y avait trop peu de bons essais pour dire s'il aide.

In detail

Une revue Cochrane de neuf essais randomisés sur le ginseng pour la cognition a conclu que les essais disponibles étaient trop peu nombreux, trop petits et trop inconsistants pour établir si le ginseng améliore la mémoire ou la pensée lors d'un usage continu. Measured in: Adults across the randomized trials of ginseng for cognitive function pooled in the Cochrane review. La limitation réside dans la minceur et l'inconsistance des essais, et non dans une absence d'effet démontrée, il s'agit donc d'un domaine où la littérature n'a pas encore bien examiné la question, et non d'un résultat nul établi.

Who this may not transfer to:The pooled trials enrolled adults of both sexes; the limitation is the thinness of the evidence, not a sex difference.

The study · 1

Geng et al., Ginseng for cognition (Cochrane review) · Cochrane Database Syst Rev 2010;(12):CD007769

Respiratory Infection

Quatre des cinq essais sur le rhume ont testé le ginseng américain, un a testé le ginseng asiatiquePreliminary · mixed
In plain terms

La plupart des essais sur le ginseng pour les rhumes ont utilisé l'espèce américaine, mais un petit essai a bien testé le ginseng asiatique dont traite cette page et a trouvé un risque plus faible d'attraper un rhume, de sorte que les preuves directes pour le Panax ginseng existent mais reposent sur une seule étude.

In detail

Une revue systématique du ginseng pour la prévention du rhume commun a trouvé cinq essais portant sur 747 adultes : quatre ont testé le ginseng nord-américain (Panax quinquefolius) et un le ginseng asiatique (Panax ginseng), l'extrait Ginsana G115. Le ginseng nord-américain a réduit le nombre de rhumes d'environ 25 % dans un essai et raccourci les rhumes d'environ 6.2 jours dans deux, et dans une analyse de sous-groupe, l'essai unique sur le ginseng asiatique a montré la plus grande réduction du risque d'attraper un rhume ou une infection respiratoire, bien que dans l'ensemble la revue ait jugé les preuves insuffisantes. Measured in: Healthy adults across five cold-prevention trials, four of North American ginseng and one of Asian ginseng. Un seul petit essai a testé le ginseng asiatique pour les rhumes, de sorte que les preuves directes pour le Panax ginseng reposent sur une seule étude, et les essais variaient en qualité.

Who this may not transfer to:The trials enrolled adults of both sexes; four tested American ginseng and one tested Asian ginseng, so the direct evidence for Panax ginseng comes from a single trial.

The study · 1

Seida et al., North American (Panax quinquefolius) and Asian Ginseng (Panax ginseng) Preparations for Prevention of the Common Cold in Healthy Adults: A Systematic Review · Evid Based Complement Alternat Med 2011;2011:282151

How it works

Des dizaines de ginsénosides agissent simultanément sur de nombreux systèmesPreliminary · mixed
In plain terms

Le ginseng agit via de nombreux composés agissant simultanément sur de nombreux systèmes, ce que les gens entendent lorsqu'ils le qualifient d'adaptogène.

In detail

Le ginseng contient des dizaines de ginsénosides qui agissent simultanément sur de nombreuses cibles biologiques, avec des effets décrits en laboratoire couvrant les hormones de stress, l'inflammation, la signalisation vasculaire et la gestion du glucose, ce qui est la base pour le décrire comme un adaptogène. Ce sont des mécanismes décrits principalement dans des travaux de laboratoire et animaux, et un large profil multi-cibles ne prédit pas par lui-même un effet clinique chez l'humain.

Who this may not transfer to:These are laboratory and animal mechanisms, not a study measured in people.

The study · 1

Attele et al., Ginseng pharmacology: multiple constituents and multiple actions · Biochem Pharmacol 1999;58(11):1685-1693

How It Works

Ginseng does not work through one mechanism. A 1999 review described dozens of ginsenosides with effects spread across the body, the breadth behind the label adaptogen, a substance thought to help the body hold steady under stress. A compound acting on four or more systems is harder to test cleanly than one with a single target.

Getting It Right

Ways to Do It

Match what you take to what you want from it. For ordinary tiredness, the free basics do more than any tonic. If you do buy, product quality matters more here than for almost any supplement.

1
Cover the basics firstFreeEasy

For everyday fatigue, consistent sleep, regular movement, and whole food do more than any root. Persistent tiredness is worth a check for low iron or a thyroid problem. Ginseng adds to the basics; it does not replace them.

2
A standardized extract$Easy

The clinical trials that worked mostly used a standardized extract, such as the G115 preparation fixed at about four percent ginsenosides, at roughly 200 to 400 mg a day. A standardized extract states its ginsenoside percentage; an unstandardized one does not, so you cannot know the dose. Look for that percentage printed on the label.

3
Korean red ginseng$ to $$Easy

Korean red ginseng is the steamed and dried root, used at around one to two grams a day of the root or an equivalent extract. It is the form behind much of the fatigue and erectile-function research.

4
For erectile function, the trial dose with a clinician$$Moderate

The erectile-function trials used higher doses, commonly around 900 mg of Korean red ginseng three times a day. If this is the goal, raise it with a clinician. Treatable causes of erectile difficulty should be ruled out first, and ginseng interacts with several medicines (see Cautions).

5
Buy a product that states and verifies its content$ to $$Easy

Ginsenoside content varies widely between brands. A stated ginsenoside percentage plus an independent test mark are what tell you a product matches its label. That verified label affects the dose you actually get more than any change to the amount you take.

6
Whole root at home, or a standardized capsuleFree to $$Moderate

The traditional way is to simmer slices of the dried root into a decoction or broth, as in Korea and China for centuries. It is cheap once you have the root, but you cannot tell how strong each dose is. The modern way is a standardized capsule with a known dose.

Go Deeper

  • Fatigue: where the root's modest fatigue signal sits among everything else that helps, and why a check for iron or thyroid comes first.
  • Erectile dysfunction: the treatable causes to rule out, and how the seven-trial Korean red ginseng evidence compares.
  • Ashwagandha: another traditional tonic with a modern evidence base, useful to compare against ginseng on stress and vitality.

The Chinese Medicine View

In Chinese medicine, Ren Shen has been used for more than 2,000 years for depletion and exhaustion. It is the chief herb for tonifying the Yuan Qi, the original or source Qi, the body's deepest reserve of vitality. Warm and sweet, it enters the Lung and Spleen channels. It is reached for in profound depletion: exhaustion, collapse, shortness of breath, a weak pulse, the aftermath of severe illness or blood loss. It is also said to calm the spirit and benefit the fluids.

Because it is a warming tonic that adds, it can aggravate heat and excess. Someone with signs of heat, high blood pressure of a full type, an acute infection, or strong agitation is a poor candidate. Classical texts warn against use in these states. The tradition reaches for it in emptiness and warns against it in a congested or overheated body.

A practitioner matches the herb to the person's constitution before prescribing it. The modern trials happen to find the clearest effects in people who are depleted, fatigued, or recovering, the same group the tradition treats, an overlap worth thinking about, not confirmation that the tradition's reasoning about Qi was correct. Healthy young adults, like the 30 in the cognition study, show the least.

Cautions For This Practice

Everything to be aware of is here, in one place. This practice suits most healthy people; a few situations call for real care.

Généralement bien toléré, avec céphalée, troubles du sommeil et troubles gastriques comme effets les plus fréquents

Une revue systématique des effets indésirables a montré que le taux d'événements indésirables avec les mono-préparations de Panax ginseng est similaire à celui du placebo, les plus fréquents étant céphalée, troubles du sommeil et troubles gastro-intestinaux, avec des préoccupations d'interaction documentées pour l'anticoagulant warfarine, l'antidépresseur phénelzine et l'alcool ; l'effet hypoglycémiant du ginseng justifie également de la prudence avec les médicaments contre le diabète. Le signalement des événements indésirables dans les essais sur le ginseng est inconsistant, et les preuves d'interaction reposent en partie sur des cas cliniques, et non des études contrôlées, ce qui justifie la prudence vis-à-vis des classes médicamenteuses mentionnées.Coon and Ernst, Panax ginseng: a systematic review of adverse effects and drug interactions

La teneur en ginsénosides variait de 15 à 36 fois entre 25 produits

Une analyse en laboratoire de 25 produits commerciaux à base de ginseng a montré que la concentration en ginsénosides variait de 15 fois entre les gélules et de 36 fois entre les liquides, de sorte que la dose réelle de composé actif reçue par un consommateur peut différer de nombreuses fois entre des marques étiquetées ginseng. Cette variation signifie qu'un essai positif sur un extrait standardisé ne peut pas être supposé s'appliquer à un produit non standardisé, ce qui explique pourquoi une teneur en ginsénosides déclarée compte davantage ici que pour la plupart des compléments.Harkey et al., Variability in commercial ginseng products: an analysis of 25 preparations

Blood thinners, especially warfarin

Ginseng may reduce the effect of warfarin, a common blood thinner, which could matter for someone relying on it. If you take warfarin or another anticoagulant, tell your prescriber before starting ginseng, so your INR can be watched.

Diabetes medication and blood sugar

Because ginseng can lower blood sugar by a small amount, taking it alongside insulin or other diabetes medicines could push blood sugar lower than intended. If you are treated for diabetes, raise it with your clinician and keep an eye on your readings when you start or stop.

Headache, sleep, and stomach upset

The most common complaints are headache, sleep disturbance, and stomach upset, and some people notice restlessness or a rise in blood pressure. Taking ginseng earlier in the day, and starting at a lower dose, are simple ways to see how it sits with you. If you have poorly controlled high blood pressure, discuss it first.

Pregnancy, breastfeeding, and hormone-sensitive conditions

Ginseng is generally not recommended in pregnancy or while breastfeeding, since it has not been established as safe in those situations. Some ginsenosides show mild estrogen-like activity in the laboratory, so anyone with a hormone-sensitive condition may want a clinician view before using it.

Other medicines and surgery

Ginseng can interact with several drug classes beyond the ones above, including some antidepressants, and its possible effect on bleeding means pausing it before planned surgery is reasonable. If you take regular medication, check with a pharmacist or clinician before adding ginseng.

Start slow, be smart, read the research, and consult a professional if you have any concerns. This is here to inform your choice, not make it for you.

Common Questions

How long before I'd notice anything?

Give it a few weeks. The effects on fatigue build gradually over that window, and they stay modest even at their best.

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All 11 sources on this page independently checked and cross-referenced.

Thomas Dehli, Founder & Editor, Sacred Lotus

Sacred Lotus has published Chinese medicine reference material since 2001. Integrative pages are held to the same standard as the herb and formula library: cite the source, grade the claim at its real strength, and say where the research has not looked. This page is educational and it is not medical advice. Last reviewed and updated August 9, 2026.