Echinacea for preventing and treating the common cold.
- 2014-02-20
- Meta-Analysis · n = 4,631
- The Cochrane database of systematic reviews 2014(7)
- Marlies Karsch-Völk
- Bruce Barrett
- David Kiefer
- Rudolf Bauer
- Karin Ardjomand-Woelkart
- Klaus Linde
- PubMed: 24554461
- DOI: 10.1002/14651858.cd000530.pub3
- High evidence
Of the seven treatment trials reporting data on the duration of colds, only one showed a significant effect of Echinacea over placebo.
- Effect
- Neutral
- Effect size
- Small
- Significant
- No