Echinacea for a cold? Eh, don't bother, study concludes

Here’s what the study concluded: "This dose regimen of the echinacea formulation did not have a large effect on the course of the common cold, compared with either blinded placebo or no pills. However, the trends were in the direction of benefit, amounting to an average half-day reduction in the duration of a weeklong cold, or an approximate 10% reduction in overall severity." The full study was recently published in the Annals of Internal Medicine.

The National Center for Complementary and Alternative Medicine lists studies that also find echinacea ineffective in fighting colds. This Los Angeles Times story profiles another study with the same conclusions.

Bottom line: Don’t run out and buy echinacea if you develop cold symptoms -- it's probably better just to say home, take it easy and not expose others. And here’s a look at the pros and cons of other common cold treatments from MayoClinic.com.