Echinacea is one of the most widely studied herbal supplements, with a long history of traditional use among Indigenous peoples of North America for supporting general wellness. Research suggests that preparations made from Echinacea purpurea and Echinacea angustifolia — particularly extracts from the root and aerial parts — may help support immune function and reduce the duration or severity of upper respiratory symptoms when taken early in their onset. Studies indicate that its bioactive compounds, including alkamides, polysaccharides, and caffeic acid derivatives, appear to interact with immune pathways, though findings across clinical trials have been mixed depending on the species, plant part, and extraction method used. As with many botanicals, the quality and standardization of echinacea products can vary considerably, making the source and preparation worth considering.
Compare this supplementResearch suggests that Echinacea may influence immune function through several proposed mechanisms, including modulat...
View studies →Research suggests that Echinacea shows promising wound-healing properties across multiple lines of evidence, with in ...
View studies →Research suggests that Echinacea, particularly Echinacea purpurea, may support cold and flu symptom relief through mu...
View studies →Research suggests that Echinacea, particularly Echinacea purpurea extracts, may have antiviral properties relevant to...
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 | 1,000–1,500 mg | Daily | Cold prevention and general immune function maintenance | Referenced in prevention-focused RCTs and systematic reviews |
| Extract | 400–900 mg | Three times daily | Acute cold treatment, short-term immune support at onset of illness | Used in multiple RCTs for acute phase treatment lasting 7–10 days |
| Extract | 300–500 mg | Three times daily | Cold and flu support, reducing duration and severity of upper respiratory infections | Common in clinical trials using standardized E. purpurea or E. angustifolia root extracts |
| Liquid | 2.5–5 mL | Twice daily | Immune function support, general respiratory health | Common in clinical trials using pressed juice preparations of E. purpurea (e.g., Echinacin) |
| Topical | — | As needed | Wound healing, minor skin irritation and inflammation | Traditional and clinical use of E. purpurea-based creams; concentration varies by product |