PARIS (AFP) - Echinacea, a medicinal herb that came to prominence thanks to its use by Sioux Indians, can more than halve the risk of catching a cold, a wide-scale study has confirmed.
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Taking echinacea supplements can reduce the risk of a cold by 58 percent and may also shorten the duration of a cold almost one and a half days, according to the paper, published on Sunday in the July issue of the journal The Lancet Infectious Diseases.
The study is a "meta-analysis" comparing the outcome of 14 published trials using echinacea.
One of the trials combined with echinacea with vitamin C, which showed the two together reduced the incidence of a cold by 86 percent.
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