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SCORE
American ginseng (Panax quinquefolius)
Immunity · Blood sugar · Cognition
Tier 2 — Promising
What it is
Distinct from Asian ginseng with a different ginsenoside profile and milder stimulating effects. Clinically shown to reduce post-meal blood sugar spikes by up to 20 percent when taken 40 minutes before eating. Also reduces cold frequency and duration in older adults. The Cereboost extract improved working memory in healthy adults within hours. Generally well tolerated.
Efficacy
3/5
Safety
4/5
Research
3/5
Onset
3/5
Cost
3/5
Drug-int.
4/5
Dose
200–400 mg/day standardised extract; 3 g before meals for blood sugar management
Time of day & tips
Take 40 min before meals for blood sugar control. Avoid in the evening as it may disturb sleep. Keep away from stimulants and blood thinners.
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