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Nootropic

American Ginseng

Also known as: Panax quinquefolius, American Ginseng Extract (Panax quinquefolius), American ginseng, North American ginseng

B
Evidence

American ginseng is a traditional herbal adaptogen used to support energy, immune function, and stress resilience. Moderate evidence supports benefits for fatigue and immune support, though effects are generally modest and more research is needed.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

  • Calm focus
  • Blood sugar support
  • Immune function
  • Energy and fatigue support
  • Stress resilience
  • Athletic recovery
  • Cognitive support

How it works

  • Different ginsenoside profile than Panax ginseng
  • More calming
  • Blood sugar effects

Dosage

Typical range
200-400 mg daily
Timing
Any time
With food
Optional
Duration
Cycle like Korean
Special populations
Focus, blood sugar

Forms

  • Standardized extract
  • Cereboost
  • Powder extract· 70/100
  • Capsule· 70/100
  • Whole plant powder· 70/100

Safety

Common side effects

  • Headache
  • Sleep changes

Contraindications

  • MAOIs or within 14 days of stopping
  • Hormone-sensitive cancers (theoretical)
  • Pregnancy and breastfeeding
  • Children under 12

Known interactions

Evidence notes

Gentler alternative to Korean ginseng

Grade B: Some human trials support key claims; further confirmation needed.

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.