[FONT=arial,helvetica,sans-serif]'Taking the herbal remedy echinacea can more than halve the risk of catching a common cold, US researchers say. They found it decreased the odds of developing a cold by 58% and the duration of colds by a day-and-a-half. The results in The Lancet Infectious Diseases conflict with other studies that show no beneficial effect. Experts believe echinacea, a collection of nine related plant species indigenous to North America, may work by boosting the body's immune system.'[/FONT]
http://news.bbc.co.uk/1/hi/health/6231190.stm
http://news.bbc.co.uk/1/hi/health/6231190.stm