Randomised, double blind, placebo-controlled trial of echinacea supplementation in air travellers.
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Link to full study
http://www.ncbi.nlm.nih.gov/pubmed/22229040
Conclusion of this study
Supplementation with standardised Echinacea tablets, if taken before and during travel, may have preventive effects against the development of respiratory symptoms during travel involving long-haul flights.
Supplements analyzed in this study
Health conditions analyzed in this study
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