Synopsis

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

Magnolia biondii, known as Xin Yi in Traditional Chinese Medicine (TCM), has a long history of use primarily for nasal congestion and sinus-related disorders. Its flower buds are included in classical TCM formulas such as "Xin Yi San" and "Cang Er Zi San" for conditions involving the respiratory tract. While cough, especially spastic (or spasmodic) cough, is not the main traditional indication, TCM texts sometimes mention Magnolia biondii as an adjunct in formulas for respiratory tract symptoms, including coughs associated with wind-cold invasion or upper respiratory tract infections.

However, the traditional evidence for its use in treating or supporting cough—specifically spastic cough—is limited and often indirect. Most references relate to its ability to "disperse wind-cold" and "unblock the nasal passages." There is scant direct mention of its efficacy for cough, and it is generally not considered a primary antitussive (cough-suppressant) herb in TCM. Scientific studies on Magnolia biondii and its extracts focus mostly on its anti-inflammatory and anti-allergic properties, with little robust clinical evidence directly supporting its use for cough relief.

In summary, Magnolia biondii’s use for cough (spastic) is supported more by traditional practice than scientific validation, and even in tradition, the evidence is not especially strong or specific for this condition.

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