Evidence supporting the use of: Asarum heterotropoides
For the body system: Bronchials

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Synopsis

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

Asarum heterotropoides, commonly known as wild ginger or "Xi Xin" in Traditional Chinese Medicine (TCM), has a long history of use for supporting the respiratory system, including the bronchials. In TCM, Xi Xin is included in classic formulas intended to treat coughs, asthma, and other conditions involving "wind-cold" affecting the lungs. Its traditional uses include alleviating cough, relieving nasal congestion, and acting as an expectorant. Historical texts and materia medica such as the "Shennong Bencao Jing" describe its use to "disperse cold and open the orifices," which is interpreted as supporting respiratory and bronchial health.

Modern pharmacological studies have identified essential oils and compounds such as methyl eugenol, safrole, and asarinin in Asarum heterotropoides, some of which exhibit mild anti-inflammatory and bronchodilatory actions in animal or cell studies. However, robust clinical trials in humans are lacking, and concerns exist regarding potential toxicity (especially nephrotoxicity and carcinogenicity from aristolochic acids, though these are reportedly low or absent in this species compared to others in the Aristolochiaceae family). Overall, use of Asarum heterotropoides to support the bronchial system is strongly rooted in tradition, with limited scientific validation. Caution is advised due to possible safety issues, and regulatory status varies by country.

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