Synopsis

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

Echinacea, a genus of flowering plants native to North America, has a long history of traditional use by Native American tribes and later by European settlers for the treatment and prevention of colds and other respiratory infections. Historically, Echinacea was valued for its purported immune-boosting properties, and its root, leaves, and flowers were used in teas, tinctures, and other preparations. The modern use of Echinacea for colds is largely rooted in this traditional practice.

Scientific evidence for Echinacea’s effectiveness against colds is mixed and somewhat controversial. Several randomized controlled trials and meta-analyses have investigated its potential to prevent or reduce the duration and severity of the common cold. Some studies suggest a modest benefit in reducing cold duration or severity, while others show no significant effect compared to placebo. Variability in study results may be due to differences in Echinacea species, plant parts used, extraction methods, dosages, and study designs. Overall, the quality of evidence is considered low to moderate, with systematic reviews (such as those by the Cochrane Collaboration) generally concluding that there is insufficient robust evidence to firmly support its use for colds.

In summary, Echinacea’s use for colds is primarily justified by tradition, with some limited and inconsistent scientific support. It remains a popular herbal remedy, but evidence for its efficacy is not strong or conclusive.

More about Echinacea (unspecified)
More about Colds (antiviral)

Other ingredients used for Colds (antiviral)

Other health conditions supported by Echinacea (unspecified)

Products containing Echinacea (unspecified)