American Ginseng (Panax quinquefolius) is a root native to North America that has been used in traditional medicine for centuries and continues to attract modern scientific interest. Research suggests it may help support healthy blood sugar regulation, particularly after meals, and some studies indicate its extract — marketed in standardized forms such as Cereboost — may offer modest benefits for cognitive function, including improvements in working memory and attention. There is also a body of research exploring its potential role in immune support, with preliminary evidence suggesting it may reduce the frequency and severity of upper respiratory infections when taken during cold and flu season. While findings are promising across several areas including energy and fatigue, results can vary, and ongoing research continues to clarify its full range of effects.
Compare this supplementResearch suggests that American ginseng (Panax quinquefolius) may support cognitive function, with evidence spanning ...
View studies →Research suggests that American ginseng and its active compounds, particularly ginsenosides, may support blood sugar ...
View studies →Research suggests that American ginseng may support immune function through several biological mechanisms, including ...
View studies →Research suggests that American ginseng may offer some protective benefits against acute respiratory viral infections...
View studies →Research suggests that American ginseng may offer modest benefits for fatigue and energy, though the evidence base re...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 200–400 mg | Twice daily | Blood sugar regulation | Common in clinical trials studying postprandial glucose response |
| Capsule | 400 mg | Daily | Cold and flu support, immune function | Based on RCTs including COLD-fX trials by Predy et al. |
| Capsule | 1,000–3,000 mg | Daily | Energy and fatigue, general immune support | Traditional and clinical use range for whole root preparations |
| Extract | 200–400 mg | Daily | Cognitive function and working memory | Based on RCTs including studies by Scholey et al. on cognitive performance |
| Powder | 3–6 g | Daily | General health and fatigue, traditional use | Traditional use based on dried root preparations |