Echinacea and Reduced Common Cold Incidence

• 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

  2 Insights on

  • Reduced Common Cold Incidence

  • High evidence

  None of the 12 prevention comparisons reporting the number of patients with at least one cold episode found a statistically significant difference. However a post hoc pooling of their results, suggests a relative risk reduction of 10% to 20%.

  Effect

  Beneficial

  Effect size

  Small

  Significant

  No