Moderate evidenceeffect size d = 0.55
May shorten the common cold
Sources
- Echinacea for preventing and treating the common cold (2007)
Echinacea for Immune support
Echinacea purpurea · Asteraceae
May shorten the common cold Evidence rated moderate (d = 0.55).
Want the full plant profile? See Echinacea botanical profile →
I
How it works mechanism
Macrophage and NK-cell activation via alkylamides; in vitro and modest clinical evidence.
II
Evidence cited sources
1 sourceIII
Dosage & preparation
IV
Safety & cautions
warning · Asteraceae allergy
warning · immunosuppressants
caution · autoimmune
V
Other plants for Immune support
8 alternatives
VI
Frequently asked
Is Echinacea effective for Immune support?
May shorten the common cold Evidence is rated moderate with an effect size of d=0.55. See the Evidence section above for cited sources.
What is the recommended dose of Echinacea for Immune support?
Typical adult dose: 1–2 g as Infusion / tea. See the Dosage table for all forms. Always start at the lower end.
What are the safety risks of Echinacea for Immune support?
undefined See the Safety section for the full list of contraindications and drug interactions.
How does Echinacea compare to other plants for Immune support?
See the alternatives section above — we list other species with documented effects on Immune support, ranked by evidence quality.
Is this medical advice?
No. This is educational reference. Always consult a healthcare professional before using any herbal preparation, especially alongside prescription medication.
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