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Echinacea
A native North American herb that's been used for centuries to help fight off infections — it's one of the most studied immune-support herbs out there.
Benefits
- +May reduce duration and severity of upper respiratory infections
- +Stimulates immune cell activity
- +Contains active compounds (echinacoside, alkamides) that fight pathogens
- +May help reduce inflammation
- +Antioxidant properties
Dosage & Cost
Range300–500 mg extract/day (standardized to 4–5% echinacoside or 1.5–2% alkamides)
TimingAt the first sign of illness; take for 7–10 days max per cycle
Daily cost0.20–0.60
Echinacea purpurea and Echinacea angustifolia are the two best-studied species. Cycle: use for 1–2 weeks, then take a break.
Side Effects
- !Can cause allergic reactions — especially in people allergic to ragweed or daisies (same plant family)
- !May cause nausea or stomach upset
- !Should not be used long-term continuously — cycle on and off
- !Avoid if you have autoimmune conditions
- !May interact with immunosuppressive drugs
Food Sources
- • Echinacea is primarily available as a supplement or herbal tea
- • Not a common dietary food
References & Links
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This page is for informational purposes only. The information here has not been evaluated by the Food and Drug Administration (FDA). No supplement discussed on this page is intended to diagnose, treat, cure, or prevent any disease. Please consult your doctor or a qualified healthcare professional before taking any dietary supplement.