Evidence supporting the use of: Aster tataricus
For the health condition: Cough (dry)

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Synopsis

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

Aster tataricus, commonly known as "Zi Wan" in Traditional Chinese Medicine (TCM), has a long-standing history of use for respiratory ailments, particularly dry coughs. Historical TCM texts describe its application in herbal formulas aimed at moistening the lungs, dissolving phlegm, and relieving cough. The root of Aster tataricus is often included in classical prescriptions such as "Zhi Sou San" (Stop Cough Powder), which is specifically formulated for coughs—both dry and with scanty phlegm.

While there is some preliminary laboratory research suggesting that extracts of Aster tataricus exhibit antitussive (cough-suppressing) and expectorant properties in animal models, the majority of supporting evidence for its use in humans comes from traditional practice rather than rigorous clinical trials. The scientific studies that exist are generally limited in scope, with small sample sizes and lack of high-quality randomized controlled trials.

Therefore, the justification for using Aster tataricus for dry cough is primarily rooted in its traditional use within TCM frameworks, underpinned by centuries of empirical application. Modern scientific validation remains limited, but its continued inclusion in herbal formulas and widespread use in Asia highlight its importance in traditional respiratory care.

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