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Yessi Pratiwi — June 29, 2007 / 3:53 pm
Echinacea is a term for nine related daisy-like plant species that are native to North America and feature in the traditional medicine of the Sioux and other Plains Indians as remedies for infection, snakebites and rabies. Other names for the plant are black sampson, Kansas snakeroot and purple coneflower.
A wide-scale study confirmed, Echinacea–a medicinal herb–can more than halve the risk of catching a cold. 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. The analysis was led by University of Connecticut pharmacist Craig Coleman.
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. Its three major ingredients are alkamides, chicoric acid and polysaccharides, but it is unclear whether these work by acting separately or together, or with the help of other constituents.
But, there’s a caution, saying more work needs to be done on the plant’s safety before doctors can recommend echinacea as a standard option for preventing or treating the common cold.
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