Synopsis

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

Echinacea is commonly used as an herbal remedy to support the immune system and potentially reduce the duration and severity of the common cold. Its use is rooted in traditional medicine, particularly among Native American groups, but has also been the subject of numerous clinical studies. The scientific evidence for Echinacea's effectiveness in treating or preventing colds is mixed. Some randomized controlled trials have reported a modest reduction in cold duration or symptom severity, while others have found no significant benefit compared to placebo.

A 2014 Cochrane review concluded that Echinacea products might have a small beneficial effect on preventing colds, but the evidence is not strong and results are highly variable depending on the preparation and species used (most commonly Echinacea purpurea). The studies also suffer from significant methodological differences, making it difficult to draw firm conclusions. The proposed mechanisms include immunomodulatory and mild antiviral effects, but these have not been conclusively demonstrated in humans.

Overall, while there is a scientific rationale and some supportive evidence, the quality and consistency of data are low, and major health organizations do not recommend Echinacea as a primary treatment for colds. Its use persists due to a combination of traditional practice and limited scientific support, but expectations regarding efficacy should be modest.

More about Echinacea (various)
More about Colds (antiviral)

Other ingredients used for Colds (antiviral)

Other health conditions supported by Echinacea (various)

Products containing Echinacea (various)