Evidence supporting the use of: Echinacea (various)
For the health condition: Infection (viral)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Echinacea has a long history of traditional use, especially among Native American tribes, for the treatment and prevention of various infections, including those of viral origin such as the common cold and upper respiratory tract infections. Early European settlers adopted its use, and it became a popular remedy in the United States during the 19th and early 20th centuries, particularly for cold and flu symptoms. The rationale for its use is based on traditional beliefs that Echinacea extracts can stimulate the immune system and help the body resist infections.

Scientific studies on Echinacea's effectiveness against viral infections have produced mixed results. Some clinical trials suggest a modest reduction in the duration or severity of cold symptoms, while others find no significant benefit compared to placebo. Systematic reviews and meta-analyses generally conclude that evidence supporting Echinacea's efficacy is weak, inconsistent, or of low quality. There is some evidence from in vitro studies that Echinacea extracts may have immunomodulatory effects, but these findings have not consistently translated into significant clinical benefits for viral infections. Overall, the use of Echinacea for viral infections is primarily justified by traditional use, with limited scientific validation.

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Products containing Echinacea (various)

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