Is there proof that echinacea works?
Absolutely, but the research is not well known in America. The best research on echinacea comes from Germany, a country that is far ahead of the United States in the scientific study of over-the-counter herbal medicines. Echinacea has been studied in Germany using double-blind, placebo-controlled studies, the gold standard for scientific research on drugs. In this type of study, one group gets the real pill and the other group, the control group, gets a look-alike dummy pill. Neither the researcher nor the research subjects know who has gotten which pill until data collection is completed and the data are analyzed. This kind of research is especially necessary in studying herbal medicines to correct for the well-known placebo effect in which even a dummy pill can produce healing effects because of the power of suggestion. A double- blind, placebo-controlled study has shown that echinacea users experienced less frequent and less severe virus infections (colds and flus) by one-third to o
