American ginseng vs. Asian ginseng
| American ginseng | Asian ginseng | |
|---|---|---|
| Species | Panax quinquefolius | Panax ginseng |
| Origin | Canada, USA | Northeast Asia |
| TCM nature | Cooling | Warming |
| Ginsenosides | Higher Rb1 share | Higher Rg1 share |
What the research says
| Area | Finding | Strength |
|---|---|---|
| Blood sugar | 3 g taken 40 minutes before a meal lowered post-meal glucose (University of Toronto, 2000). | Small, short-term |
| Fatigue | 2,000 mg/day for 8 weeks improved cancer-related fatigue vs. placebo in 364 patients (Mayo Clinic-led, 2013). | Moderate |
| Colds | The Canadian extract CVT-E002 (COLD-fX) may reduce respiratory symptoms. | Limited |
Precautions
- Warfarin: a randomized trial found American ginseng reduces warfarin's effect.
- Diabetes medication: added blood-sugar lowering may cause hypoglycemia.
- Pregnancy, breastfeeding and children: insufficient safety data.
- Possible side effects: insomnia, dry mouth, headache, stomach upset.
How to choose
- Cultivated roots (3–4 years) are good value for daily use; woods-grown roots grow longer and taste stronger.
- Look for firm roots with clear rings and a radiating pattern on the cut surface; avoid musty or sulfur smells.
- Ask for origin, grade and age. Wild American ginseng is CITES Appendix II listed.
We ship from Canada to Mainland China, Hong Kong, Taiwan, Malaysia, Singapore, Indonesia, the Philippines and Vietnam at CA$7 (¥35) per pound, rounded up to the next pound, with a CA$50 (¥250) minimum; orders over CA$500 (¥2,500) ship at CA$6 (¥30) per pound. See our Shipping page for the calculator.
This article is general wellness and product information, not medical advice. If you have a medical condition, take medication, or are pregnant or breastfeeding, talk to your doctor or pharmacist first.
Sources
FAQ
What is American ginseng good for?
Traditionally for replenishing qi and clearing heat; studies suggest effects on post-meal blood sugar and fatigue, but evidence is limited.
Who should avoid American ginseng?
People on warfarin or diabetes medication should ask a doctor first; pregnant or breastfeeding women and children should consult a professional.
How much per day?
The Chinese Pharmacopoeia lists 3–6 g per day.
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