Evidence supporting the use of: Elderberry
For the health condition: Contagious Diseases

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Elderberry (Sambucus nigra) has a long history of traditional use for treating colds, flu, and other contagious diseases, but recent research has also provided some scientific validation for these uses. Several randomized, placebo-controlled clinical trials have shown that elderberry extracts, particularly syrups, may reduce the duration and severity of influenza-like symptoms. For example, a notable 2004 study published in the Journal of International Medical Research found that patients with influenza who took elderberry syrup recovered on average four days earlier than those receiving a placebo. Mechanistically, laboratory studies suggest that elderberry extracts contain bioactive compounds, such as flavonoids and anthocyanins, which may inhibit the replication of viruses, modulate inflammatory responses, and enhance immune function.

However, while these results are promising, the overall body of evidence is still limited by relatively small sample sizes and a lack of large-scale, independent replication studies. Most of the available research has focused on influenza; there is far less data regarding its efficacy against other contagious diseases. Major health organizations have not yet endorsed elderberry as a proven treatment for viral infections, emphasizing the need for further research. Nevertheless, elderberry remains a popular over-the-counter remedy, supported by both tradition and a modest but growing base of scientific evidence.

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