Evidence supporting the use of: Sambucus Nigra (unspecified)
For the health condition: Infection (viral)

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Synopsis

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

Sambucus nigra, commonly known as black elderberry, has a long history of traditional use for treating colds and flu-like symptoms, which are typically caused by viral infections. In recent decades, scientific studies have investigated its effectiveness against viral infections, particularly influenza. Several randomized controlled trials and in vitro studies have demonstrated that elderberry extracts can reduce the duration and severity of influenza symptoms, potentially by inhibiting viral entry and replication. For example, a randomized study published in 2004 (Zakay-Rones et al.) found that elderberry extract reduced the duration of flu symptoms by about 4 days compared to placebo. In vitro experiments have shown that elderberry flavonoids can block the ability of certain viruses, including influenza, to infect host cells. However, the number of clinical trials is limited, sample sizes are often small, and most research focuses on standardized extracts rather than unspecified forms of Sambucus nigra. Evidence for its effectiveness against other viral infections, such as the common cold or coronaviruses, is less robust and largely inconclusive. While elderberry is generally considered safe when used appropriately, more large-scale, high-quality clinical trials are needed to confirm its efficacy and clarify its mechanism of action in viral infections.

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