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Effects of echinacea on the frequency of upper respiratory tract symptoms: a randomized, double-blind, placebo-controlled trial.

Authors
  • O'Neil, Joelle
  • Hughes, Susan
  • Lourie, Andrea
  • Zweifler, John
Type
Published Article
Journal
Annals of Allergy Asthma & Immunology
Publisher
Elsevier
Publication Date
Apr 01, 2008
Volume
100
Issue
4
Pages
384–388
Identifiers
DOI: 10.1016/S1081-1206(10)60603-5
PMID: 18450126
Source
Medline
License
Unknown

Abstract

Prophylactic treatment with commercially available E. purpurea capsules did not significantly alter the frequency of upper respiratory tract symptoms compared with placebo use.

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