Synopsis

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

Platycodon root, also known as Platycodon grandiflorus or "jie geng" in Traditional Chinese Medicine (TCM), has been historically used to support the health of the mucus membranes, particularly those of the respiratory tract. In TCM, it is valued for its ability to "open up the lungs," expel phlegm, and relieve cough and sore throat. The root is commonly included in herbal formulas aimed at soothing and protecting the linings of the throat, bronchi, and sinuses. While there are some modern pharmacological studies indicating that platycodon saponins may have anti-inflammatory and expectorant properties, most of the evidence supporting its use for mucus membrane health comes from centuries of traditional use rather than robust clinical trials. The scientific validation is limited, largely consisting of in vitro and animal studies demonstrating potential benefits in reducing inflammation and modulating immune responses in airway tissues. However, high-quality human clinical trials are lacking. Therefore, the use of platycodon root to support mucus membranes is justified primarily by traditional use, with moderate traditional evidence supporting efficacy, but limited scientific corroboration to date.

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