Evidence supporting the use of: Astragalus
For the health condition: Influenza

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Synopsis

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

Astragalus (Astragalus membranaceus) has been used in Traditional Chinese Medicine (TCM) for centuries, primarily to strengthen the immune system and improve resistance to infections, including respiratory illnesses like influenza. In TCM, astragalus is considered a "Qi tonic," believed to bolster the body's defenses against external pathogens. Historical records and classic texts describe its use for preventing colds and flu, rather than directly treating active infections.

Scientific research on astragalus and influenza is limited, with most studies focusing on its general immunomodulatory effects rather than its specific efficacy against the influenza virus. Some in vitro and animal studies suggest that astragalus extracts may enhance immune responses, such as increasing the activity of white blood cells and stimulating the production of interferons, which are important in antiviral defense. However, robust clinical trials in humans evaluating astragalus as a treatment or preventive agent for influenza are lacking, and existing studies often have methodological limitations or small sample sizes.

Therefore, the use of astragalus for influenza is primarily justified by traditional practices and historical use, with only modest supporting evidence from preliminary scientific research. It is not considered a first-line or evidence-based treatment for influenza in modern medicine. Individuals interested in using astragalus should consult healthcare professionals, especially if they have underlying health conditions or are taking other medications.

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