Monograph
Ginseng
Panax ginseng
Updated August 19, 2026
Key points
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01
Ginseng is a genus, not a brand
Panax ginseng, P. quinquefolius, and P. notoginseng are different species. Eleuthero is not Panax. The trial you want may not be the bottle you bought.
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02
Red and white are processing
Both are Asian ginseng. Steaming makes red root and changes ginsenosides (Rg3 and kin). It is not American ginseng.
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03
Ratios, not one molecule
American root often leans Rb1; Asian root is the Rg1/red-ginseng file. Notoginseng brings notoginsenoside R1 and a bleeding/trauma use.
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04
The fatigue trial is American
Barton N07C2 used 2 g/day Wisconsin P. quinquefolius powder. EMA’s asthenia monograph is P. ginseng traditional use. Do not swap them.
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05
Warfarin depends on the species
American ginseng lowered warfarin effect in a 2004 RCT. Asian products are flagged the other way. Check the Latin, then check INR.
Ginseng is a sales word before it is a plant. In Chinese the character 人参 (rénshēn) means man-root: a slow, forked Araliaceae taproot that looks faintly human. Linnaeus’s genus Panax is Greek for all-heal. Those two etymologies sold a global tonic. They also mixed up several species, two processing methods, and at least one shrub that is not Panax at all.
This monograph is a variety file. Asian ginseng (Panax ginseng) is the EMA root and the Korean red-ginseng industry. American ginseng (P. quinquefolius) is a different species with a different ginsenoside ratio, a CITES wild-harvest problem, and its own trial stack—Wisconsin root for cancer-related fatigue, a warfarin interaction that lowers INR. Notoginseng (P. notoginseng, sanqi) is a trauma and bleeding herb in Chinese pharmacy, not a stamina capsule. Japanese ginseng (P. japonicus) is mostly rhizome. Siberian “ginseng” (Eleutherococcus senticosus, eleuthero) does not contain ginsenosides. Maca as “Peruvian ginseng” is a mustard. Brazilian “ginseng” (Pfaffia) is amaranth kin. If the bottle only says ginseng, you do not know which file you opened.
Nothing here is medical advice. Fatigue, diabetes, erectile dysfunction, and cancer recovery belong with a clinician. Ginseng is a CYP and glucose and clotting conversation, not a harmless tea. Stop it a week before surgery. Do not stack it with warfarin or imatinib as a wellness experiment.
Botanical profile
True ginsengs are Panax (Araliaceae): shade herbs of temperate forests with palmate compound leaves, an umbel of small flowers, and red berries. The medicinal part is the aged root, often with a “neck” of rhizome scars that records winters. NCBI Taxonomy: P. ginseng 4054, P. quinquefolius 44588, P. notoginseng 44586, P. japonicus 44685. Eleutherococcus senticosus is 82096—same family, different genus.
Asian ginseng (P. ginseng C.A. Mey.) is native to Korea, northeastern China, and the Russian Far East. Cultivation is now the crop; wild stock is scarce. White ginseng is the peeled, sun- or oven-dried root. Red ginseng is steamed, then dried: same species, a Maillard-and-saponin transformation. EMA and the Ph. Eur. (Ginseng radix, monograph 1523) cover both, requiring a minimum sum of ginsenosides Rg1 and Rb1. Korean, Chinese, and “Manchurian” on a label are geography and process, not three botanies.
American ginseng (P. quinquefolius L.) is native to eastern North American hardwoods. Wild plants are slow and still listed under CITES Appendix II; the U.S. Fish and Wildlife Service regulates export. Wisconsin, Ontario, and British Columbia grow the cultivated crop that supplies most capsules and much of the root shipped to China. In Chinese pharmacy this species is xī yáng shēn, a cooler “yin” root, not a substitute for rénshēn. The leaflets and berry look like Asian ginseng to a casual eye; the chemistry does not.
Notoginseng (P. notoginseng (Burkill) F.H. Chen; sānqī, tienchi) is a southwestern Chinese species used for trauma, bleeding, and “moving blood.” It carries notoginsenoside R1 in addition to familiar ginsenosides. It is the lead herb in the proprietary mix Yunnan Baiyao. That is a hemostatic tradition, not the fatigue monograph. Japanese ginseng (P. japonicus) leans on rhizome and oleanane-type saponins (chikusetsusaponins) more than the classic Korean taproot profile. Vietnamese ginseng (P. vietnamensis) is another true Panax with its own saponins; it is not the Wisconsin or G115 product.
Eleuthero is the lookalike that did the most commercial damage. E. senticosus (ci wu jia, Siberian ginseng) has eleutherosides, not ginsenosides. MSKCC files it separately and warns it is not Asian, American, or notoginseng. LiverTox still has to say the word ginseng covers eleven Panax species plus this naming mess. Quality surveys find products with little or no ginsenoside. Identity is the first assay.
History
Chinese materia medica treated rénshēn as a rare forest tonic for centuries: qi, collapse, recovery. The man-shaped root became a luxury good. Korea built a steamed red-ginseng state industry. Japan used P. japonicus as a local stand-in. None of that was a randomized trial, and none of it licensed every plant later sold as ginseng.
American ginseng entered Qing-era trade as a cooler counterpart. Nineteenth-century North American wild-digging emptied woods; CITES listing in 1975 is the hangover. Cultivated Wisconsin root became the export that China still buys. That trade is why a Mayo-led cancer-fatigue trial could specify “Wisconsin ginseng” as a chemotype, not a tourist slogan.
Twentieth-century phytomedicine isolated ginsenosides, standardized G115 and similar extracts, and exported “adaptogen” as a marketing category. Soviet research on eleuthero as a cheaper tonic is why health-food shelves still say Siberian ginseng. EMA’s HMPC later wrote a traditional-use monograph for P. ginseng radix (asthenia, fatigue, weakness)—not well-established like horse-chestnut seed, and not a license for American or Siberian products.
The modern clinic file is species-split: Asian extracts for some erectile-dysfunction and glycemic work of uneven quality; American root for cancer-related fatigue (Barton N07C2) and a documented warfarin interaction (Yuan 2004); notoginseng in trauma formulas. History here is a labeling problem that outran botany.
Active compounds and how it works
The active story is ginsenosides: dammarane triterpene saponins. They split into protopanaxadiol (PPD) types—Rb1, Rb2, Rc, Rd, Rg3—and protopanaxatriol (PPT) types—Re, Rg1, Rg2, Rh1. Fresh P. ginseng is dominated by Rb1, Rb2, Rc, Re, and Rg1. Gut bacteria deglycosylate them toward compound K, which is why two people can swallow the same capsule and not share a metabolite profile.
Species differ by ratio, not by a unique magic molecule. American root is often richer in Rb1 relative to Rg1 and is traditionally read as less “stimulating.” Asian root, especially some Korean chemovars, can be relatively higher in Rg1. Red processing of P. ginseng further rewrites the mix: steaming drops some native glycosides and generates or enriches rarer ones (Rg3, Rk1, Rg5, Rh4). He, Huang, and colleagues (Planta Medica 2018) review that white-versus-red gap as chemistry plus immunomodulation, not as two plants. Notoginseng adds notoginsenoside R1 and a hemostatic/antiplatelet literature that does not copy onto a Korean red-ginseng tea.
Eleutherosides in E. senticosus are lignans and phenylpropanoids. They are not ginsenosides. Calling eleuthero “Siberian ginseng” is like calling maca Peruvian ginseng: a marketplace rhyme.
Mechanisms proposed in reviews (Mancuso and Santangelo, 2020; MSKCC) include mixed CNS stimulation and sedation depending on the ginsenoside, nitric-oxide effects in endothelium and corpus cavernosum, immune modulation, and glucose handling. Those are experimental maps. They do not make every energy drink a G115 trial.
Common uses
Asian ginseng (P. ginseng). EMA traditional use is symptomatic asthenia—fatigue and weakness—for specified white and red root preparations, on long-standing use rather than a decisive modern RCT stack. NCCIH (Asian ginseng page): short-term oral use up to about six months in usual amounts looks acceptable for many adults; evidence for the big claims (performance, immunity, “adaptogen”) is mixed. A 2021 Cochrane review of ginseng for erectile dysfunction found a possible small effect with low-certainty evidence. A 2022 Nutrients meta-analysis (Naseri et al.) pooled Panax trials in prediabetes and type 2 diabetes and reported glycemic signals that still need better, species-clean trials. MSKCC: human data limited; do not confuse this plant with American, Siberian, or notoginseng.
American ginseng (P. quinquefolius). The cleanest clinical object is cancer-related fatigue: Barton and colleagues’ Alliance/NCCTG N07C2 trial (JNCI 2013; PMC3888141) randomized 2,000 mg/day of Wisconsin American ginseng versus placebo for eight weeks and saw fatigue improve, especially in people still on cancer therapy. That is ground American root, not an ethanol extract Barton flagged as a phytoestrogen concern in breast-cancer patients. COLD-fX / CVT-E002 (McElhaney 2006) is a specific American-ginseng extract studied for respiratory symptoms—not a license for every cold capsule. Glucose-lowering work exists; so does the warfarin trial below. TCM uses this species as a yin tonic, which is a tradition, not a lab result.
Notoginseng (P. notoginseng). Trauma, bleeding, “stasis”—and Yunnan Baiyao as a multi-herb product with sanqi as the named core (MSKCC). Do not take a hemostatic tradition and a fatigue capsule as interchangeable. Raw versus steamed notoginseng even differ in antiplatelet comparisons in the ethnopharmacology literature. This is not Korean red ginseng with a different sticker.
Eleuthero. Traditional adaptogen and Soviet performance folklore. Different chemistry. MSKCC: not Panax; watch digoxin because of assay/interference history. Do not use it to “get the same ginseng” cheaper.
Do not use any of these to replace cancer treatment, to self-treat hypoglycemia, or as a daily stimulant on top of energy drinks. Athletic-performance claims remain a weak file. Compression of all Panax data into one “ginseng works” sentence is how people cite the wrong trial.
Preparations and traditional use
White Asian: dried P. ginseng root, teas, powders, hydroalcoholic extracts. EMA lists comminuted root decoctions, powdered root (roughly 600–2,000 mg/day in the monograph’s traditional posology), and several dry/soft/liquid extracts, including a 4% total-ginsenoside dry extract related to the old G115-type products.
Red Asian: steamed then dried P. ginseng. Korean red ginseng extracts are a separate commercial chemotype. He 2018 is the processing paper, not a dose chart.
American: dried root powder (the Barton 2 g/day design), extracts, and proprietary polysaccharide-rich fractions (CVT-E002). Wild root is a conservation object; cultivated Wisconsin/Ontario root is the supplement crop. Prefer products that name Panax quinquefolius and a ginsenoside method. Ethanol-processed products are not the N07C2 powder.
Notoginseng: root slices, powders, and formulas such as Yunnan Baiyao. That formula is proprietary and not a single-herb dose. Eleuthero: root/rhizome as “Siberian ginseng”—read the Latin. If a label cannot say Panax ginseng, P. quinquefolius, P. notoginseng, or Eleutherococcus senticosus, it is not a monograph, it is a blend.
Side effects
Common with Asian ginseng: insomnia is the one NCCIH names first. Also dry mouth, tachycardia, nausea, diarrhea, headache, nervousness, nosebleeds in older lists. MSKCC adds mania case reports after high chronic intake, gynecomastia in an adolescent using extract for bodybuilding, and other scattered neurologic and vascular cases, some from mixed products.
Glucose can fall. That is a feature in diabetes papers and a hazard with insulin or sulfonylureas. Blood pressure and heart-rate jitter happen in some users.
Liver: LiverTox likelihood E—ginseng by itself is an unlikely cause of clinically apparent liver injury. The documented problem is interaction: ginseng plus imatinib or raltegravir has been followed by hepatitis that did not recur when the drug was restarted without the herb. Do not read E as “hepatoprotective.”
Estrogenic in-vitro signals (ginsenoside Rh1, Rg1, Rb1 in various papers) are why Barton avoided ethanol extracts in breast-cancer fatigue work. Clinical relevance is unsettled; hormone-sensitive cancers still belong in an oncology conversation, not a gas-station tonic.
Contraindications
NCCIH: questions remain on long-term safety; many experts skip ginseng in infants, children, pregnancy, and breastfeeding. Autoimmune disease is a caution (possible immune stimulation). Stop at least a week before surgery (MSKCC).
Do not use as a substitute for indicated diabetes, ED, or cancer-fatigue care. Do not give raw notoginseng or Yunnan Baiyao as a casual “stop bleeding” kit without a clinician—those products have their own clotting and estrogenic flags.
Hormone-sensitive breast cancer: avoid unstandardized ethanol ginseng products; American-root powder in N07C2 is a specific trial object, not a blanket oncology endorsement.
Psychiatric mania history: high-dose Asian ginseng has case-level signals. Insomnia that wrecks sleep is a reason to stop, not to dose at night.
Drug and herb interactions
Warfarin is the species lesson. Yuan et al. (Annals of Internal Medicine, 2004): American ginseng reduced warfarin’s effect in healthy volunteers. MSKCC Asian ginseng, conversely, warns it may increase bleeding risk with warfarin. Those are not the same arrow. Either way, INR is not a place to guess the Latin on the bottle.
Imatinib and raltegravir: reported liver injury when combined with ginseng (LiverTox, MSKCC). CYP3A4 stories run both ways in vitro depending on the ginsenoside; clinical relevance is messy. Tell a pharmacist.
Insulin and other hypoglycemics: additive glucose lowering. Digoxin: the classic interference warning is especially attached to eleuthero/Siberian products and older assays; still a reason not to freelance.
Caffeine and other stimulants stack with the insomnia and tachycardia file. Do not bury ginseng in an “energy blend” with synephrine and then blame Panax.
Frequently Asked Questions
No. Asian is Panax ginseng (NCBI 4054). American is P. quinquefolius (44588). They share ginsenosides in different ratios. Traditional Chinese pharmacy treats Asian as a warmer qi tonic and American as a cooler yin tonic. Clinical files (fatigue, warfarin, EMA asthenia) are not interchangeable.
Process, not species. White is dried P. ginseng. Red is steamed, then dried. Steaming transforms ginsenosides (He et al., 2018). Korean red ginseng is still Asian ginseng. It is not American or Siberian.
No. Eleuthero (Eleutherococcus senticosus) is another Araliaceae shrub with eleutherosides, not ginsenosides. MSKCC keeps it on a separate page. Cheaper “ginseng” is often this plant or a blend.
Panax notoginseng (sanqi) is a true Panax used for trauma and bleeding, with notoginsenoside R1 as a marker. Yunnan Baiyao is a proprietary mix that lists it as a core herb. That is not a stamina or cancer-fatigue product.
American ginseng powder helped cancer-related fatigue in the 2013 N07C2 RCT. EMA allows traditional P. ginseng products for asthenia. Cochrane 2021 found a possible small ED effect for ginseng with low-certainty evidence. None of that is a panacea, and species matter.
Not as a casual add-on. American ginseng reduced warfarin’s effect in a randomized trial. Asian ginseng is flagged for bleeding and for lowering glucose. If you use either drug class, this is a clinician-and-INR or glucose-log problem.
LiverTox notes commercial ginsenoside content ranges down to none. Wrong species, exhausted root, and “ginseng” lookalikes (eleuthero, maca, Pfaffia) explain a lot of dead capsules. Latin name plus a quantified ginsenoside method is the minimum.
Pregnant or breastfeeding people, children, anyone facing surgery within a week, people with uncontrolled autoimmunity or mania risk, and anyone on warfarin, imatinib, raltegravir, or glucose-lowering drugs unless a clinician is in the loop. Hormone-sensitive cancer needs an oncology opinion, not an energy drink.
Sources
These references support the history, clinical, and safety claims on this page. They are not an endorsement of any product.
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Asian ginseng: usefulness and safety
National Center for Complementary and Integrative Health (NIH), 2025
Consumer page for Panax ginseng: ginsenosides, red versus white as processing, short-term safety, insomnia as the common adverse effect, pregnancy/child cautions.
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Ginseng (Asian)
Memorial Sloan Kettering Cancer Center, About Herbs, 2024
Clinical summary: P. ginseng is not American, Siberian, or notoginseng; warfarin/imatinib/raltegravir/insulin cautions; limited human data for ED and diabetes.
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Ginseng (American)
Memorial Sloan Kettering Cancer Center, About Herbs, 2024
Separate American-ginseng file: yin-tonic tradition, cancer-related fatigue trial, glucose work, and Yuan 2004 warfarin antagonism.
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Siberian ginseng
Memorial Sloan Kettering Cancer Center, About Herbs, 2024
Eleuthero (Eleutherococcus senticosus): not a Panax species; eleutherosides; digoxin caution; do not confuse with Asian or American ginseng.
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Yunnan Baiyao
Memorial Sloan Kettering Cancer Center, About Herbs, 2024
Proprietary TCM mix whose named core herb is Panax notoginseng; hemostatic claims distinct from stamina ginseng.
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Ginseng
LiverTox, National Institute of Diabetes and Digestive and Kidney Diseases (NIH), 2018
Likelihood E as a direct hepatotoxin; notes multiple Panax species, variable ginsenoside content, and liver injury via drug interactions (imatinib, raltegravir).
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Ginseng radix — herbal medicinal product
European Medicines Agency, Committee on Herbal Medicinal Products, 2020
HMPC landing page for Panax ginseng C.A. Mey., radix: traditional use for asthenia; white versus steam-dried red root.
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European Union herbal monograph on Panax ginseng C.A.Mey., radix (final — revision 1)
European Medicines Agency, 2020
Official traditional posology for white and red ginseng preparations and the Ph. Eur. ginsenoside quality frame.
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Panax ginseng and Panax quinquefolius: from pharmacology to toxicology
Journal of Ginseng Research (PMC7116968), 2020
Open-access comparison of the two main Panax species, PPD/PPT ginsenosides, red-ginseng processing, and the eleuthero/Pfaffia naming problem.
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The difference between white and red ginseng: variations in ginsenosides and immunomodulation
Planta Medica (PubMed 29925101), 2018
He et al.: steaming versus drying of P. ginseng as a chemical transformation, not a change of species.
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Wisconsin ginseng (Panax quinquefolius) to improve cancer-related fatigue: a randomized, double-blind trial, N07C2
Journal of the National Cancer Institute (PMC3888141), 2013
Barton et al.: 2,000 mg/day cultivated American ginseng versus placebo for eight weeks in cancer-related fatigue.
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Brief communication: American ginseng reduces warfarin’s effect in healthy patients
Annals of Internal Medicine (PubMed 15238367), 2004
Yuan et al. randomized trial: P. quinquefolius antagonized warfarin—species-specific interaction data, not a generic “ginseng thins blood” slogan.
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Ginseng for erectile dysfunction
Cochrane Database of Systematic Reviews (PubMed 33871063), 2021
Cochrane review: possible small ED benefit with low-certainty evidence; not a first-line ED drug.
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The efficacy of ginseng (Panax) on human prediabetes and type 2 diabetes mellitus: a systematic review and meta-analysis
Nutrients (PubMed 35745129), 2022
Naseri et al. pooled Panax glycemic trials; useful and still limited by mixed species and product chemistry.
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Efficacy of COLD-fX in the prevention of respiratory symptoms in community-dwelling adults
Journal of Alternative and Complementary Medicine (PubMed 16566675), 2006
McElhaney et al. RCT of CVT-E002, a specific American-ginseng extract—not evidence for every cold capsule labeled ginseng.
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American ginseng (Panax quinquefolius)
U.S. Fish and Wildlife Service, 2024
CITES Appendix II wild-harvest and export context for American ginseng; cultivated root is the usual supplement crop.
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Taxonomy browser: Panax ginseng
NCBI Taxonomy (NIH), 2024
NCBI taxon 4054 for Asian ginseng.
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Taxonomy browser: Panax quinquefolius
NCBI Taxonomy (NIH), 2024
NCBI taxon 44588 for American ginseng.
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Taxonomy browser: Panax notoginseng
NCBI Taxonomy (NIH), 2024
NCBI taxon 44586 for notoginseng (sanqi).
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Taxonomy browser: Eleutherococcus senticosus
NCBI Taxonomy (NIH), 2024
NCBI taxon 82096 for eleuthero, the plant sold as Siberian ginseng.
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Ginsenoside Rb1
PubChem, National Library of Medicine (NIH), 2024
PPD-type ginsenoside often abundant in American ginseng; CID 9898279.
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Ginsenoside Rg1
PubChem, National Library of Medicine (NIH), 2024
PPT-type ginsenoside used with Rb1 as a Ph. Eur. quality marker for Ginseng radix; CID 441923.
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Notoginsenoside R1
PubChem, National Library of Medicine (NIH), 2024
Marker saponin of Panax notoginseng, distinct from the Asian/American stamina file; CID 441934.