© Nina Filippova · CC BY 4.0 · Commons
Asian ginseng
CautionGinseng · (Panax ginseng)
Ginseng family (Araliaceae)
Description
Asian ginseng is a perennial woodland plant of the ginseng family, native to the shady mountain forests of Korea, north-eastern China and the Russian Far East. Above ground it stays inconspicuous: a single stem with palmate leaves and, in summer, an umbel of bright red berries. The part used is the fleshy root, which grows for four to six years before being harvested in autumn — hence the high price. The genus name Panax comes from the Greek and means something like cure-all; it describes the plant's reputation, not its demonstrated effect. A distinction is made between white ginseng, merely peeled and dried, and red ginseng, steamed beforehand, which shifts the pattern of its constituents. Its signature compounds are the ginsenosides, a group of saponins, alongside polysaccharides. Ginseng is not harmless: insomnia is the most common side effect, and it can affect blood sugar and blood clotting.
CONTRAINDICATED during pregnancy
Not recommended. One constituent caused birth defects in animal studies; sound human data are lacking.
CONTRAINDICATED for children
Not recommended for infants and children.
Critical drug interactions with:
Gerinnungshemmer vom Cumarin-Typ (Warfarin, Phenprocoumon) · Immunsuppressiva
Traditionally used as a tonic for fatigue, stress and reduced performance; marketed as an adaptogen in the West. A 2023 review found a small beneficial effect for general fatigue — not that of a specific disease — though with inconsistent results across studies.
Ginseng is promoted for cognitive function, fatigue and immune support. The US NCCIH describes modest signals of better mental performance in middle-aged adults — in younger adults nothing showed. For influenza there are preliminary signals of a lower risk of falling ill, but not of milder illness. For athletic performance most studies found no benefit. Overall the evidence remains thin.
A 2022 review found improvements in fasting blood glucose, total cholesterol and certain inflammatory markers in people with prediabetes and diabetes; the overall picture remains inconclusive. For erectile dysfunction, studies point to an improvement with oral use. Both are signals, not settled findings — and the blood-sugar effect is also the reason for caution with diabetes medication.
Sources: [1]
The most common side effect is insomnia. Ginseng may lower blood sugar (caution with diabetes medication) and affect blood clotting (reported interaction with warfarin). Interactions via cytochrome P450 enzymes and possible worsening of autoimmune disorders are described. Rare but serious: severe rash, liver damage and allergic reactions. Short-term oral use of up to about six months in recommended amounts is considered safe for most people according to NCCIH; data on longer use are lacking. Not recommended for infants, children, or pregnant or breastfeeding women. Consult a clinician before use if taking medication.
⏱ Max continuous use: 26 weeks
Not recommended. One constituent caused birth defects in animal studies; sound human data are lacking.
There are hardly any safety data for breastfeeding. Without data, use is inadvisable.
Not recommended for infants and children.
Drug interactions
Gerinnungshemmer vom Cumarin-Typ (Warfarin, Phenprocoumon)
A weakened effect has been reported for warfarin, while ginseng itself can affect clotting. The combination is hard to control and is best avoided.
Blutzuckersenkende Mittel (Insulin, orale Antidiabetika)
In trials ginseng lowered fasting blood glucose. Together with diabetes treatment there is a risk of hypoglycaemia — monitor readings closely.
Über Cytochrom-P450 abgebaute Arzneimittel
Ginsenosides act on several P450 enzymes. With medicines that have a narrow therapeutic range, levels can shift.
Immunsuppressiva
Ginseng is credited with a stimulating effect on the immune system — which can counteract immunosuppression and worsen autoimmune disease.
Contraindications
- Pregnancy and breastfeeding.
- Autoimmune disease — worsening has been described.
- Sleep disorders — insomnia is the most common side effect.
Harvested part: Root
- Time of day:
- In the autumn of the fourth to sixth year, once the foliage has died back. Younger roots contain fewer ginsenosides. Wild ginseng is protected in its home countries — material on the market comes from cultivation.
- Drying:
- For white ginseng, peel the root and dry it slowly in the air. For red ginseng it is steamed for several hours before drying; this creates different ginsenosides and the root turns horn-like and reddish brown.
- Storage:
- 24 months — Dry, dark and airtight. Whole roots keep considerably longer than powder.
- Ginsenoside (Rb1, Rg1, Rg3 u. a.)SaponinRoot
The signature group of active compounds. The pattern shifts when steamed into red ginseng.
- PolysaccharidePolysaccharideRoot
- Polyacetylene (Panaxynol)OtherRoot
- Phenolsäuren (Salicyl-, Vanillinsäure)Phenolic acidRoot
- Peptide und AminosäurenOtherRoot
- [1]MonographAsian Ginseng: Usefulness and Safety — NCCIH (NIH)(accessed: 2026-08-20)
- [2]MonographSafety Analysis of Panax Ginseng in Randomized Clinical Trials: A Systematic Review (PMC5533164)(accessed: 2026-06-23)
- [3]WikipediaPanax ginseng — Wikipedia(accessed: 2026-06-23)
- [4]CommonsFile:Panax ginseng C.A.Mey. 3399124768.jpg — Wikimedia Commons(accessed: 2026-06-23)