How to overcome a cold in 4 days...

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For Cold Virus, Zinc May Edge Out Even Chicken Soup

By Tara Parker-Pope, NY Times, February 15, 2011
Scientists still haven’t discovered a cure for the common cold, but researchers now say zinc may be the next best thing.

A sweeping new review of the medical research on zinc shows that sniffing, sneezing, coughing and stuffy-headed cold sufferers finally have a better option than just tissue and chicken soup. When taken within 24 hours of the first runny nose or sore throat, zinc lozenges, tablets or syrups can cut colds short by an average of a day or more and sharply reduce the severity of symptoms, according to the Cochrane Database of Systematic Reviews, a respected medical clearinghouse.

In some of the cited studies, the benefits of zinc were significant. A March 2008 report in The Journal of Infectious Diseases, for example, found that zinc lozenges cut the duration of colds to four days from seven days, and reduced coughing to two days from five.

While the findings are certain to send droves of miserable cold sufferers to the drugstore in search of zinc treatments, the study authors offered no guidance on what type of zinc product to buy. The authors declined to make recommendations about the optimal dose, formulation or duration of zinc use, saying that more work was needed before they could make recommendations.

Zinc experts say that many over-the-counter zinc products may not be as effective as those studied by researchers because commercial lozenges and syrups often are made with different formulations of zinc and various flavors and binders that can alter the effectiveness of the treatment.

The new report gives credence to the long-debated theory that zinc can be an effective treatment for colds. While it’s not certain how the mineral curbs colds, it appears to have antiviral properties that prevent the cold virus from replicating or attaching to nasal membranes.

Some cold sufferers have been wary about using zinc since the Food and Drug Administration warned consumers to stop using Zicam nasal sprays and swabs, which contain zinc, after numerous reports that some users lost their sense of smell after using the product. The Cochrane report did not review any studies of nasal zinc products.