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Clinical Trial
. 2000 Jun;44(6):1708-9.
doi: 10.1128/AAC.44.6.1708-1709.2000.

Ineffectiveness of echinacea for prevention of experimental rhinovirus colds

R B Turner  1 , D K Riker, J D Gangemi
Affiliations
Clinical Trial

Ineffectiveness of echinacea for prevention of experimental rhinovirus colds

R B Turner et al. Antimicrob Agents Chemother. 2000 Jun.

Abstract

The purpose of this study was to assess the effectiveness of echinacea for the prevention of experimental rhinovirus colds. Infection occurred in 44 and 57% and illness occurred in 36 and 43% of the echinacea- and placebo-treated subjects, respectively. This preparation of echinacea had no significant effect on either the occurrence of infection or the severity of illness.

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Figures

FIG. 1
FIG. 1
Comparison of total symptom score by day after rhinovirus challenge in volunteers treated with either echinacea (900 mg/day) or a placebo.
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