Platycodon root comes from the root of Platycodon grandiflorum (Campanulaceae). It contains platycodin, spinach sterol and its glycoside, platycodin acid, etc. Among these, platycodin stimulates mucous membranes, causing increased secretion, diluting sputum, facilitating expectoration. Additionally, platycodin has antitussive, sedative, and antipyretic effects. Furthermore, platycodon possesses anti-inflammatory properties; thus, when combined with other herbs, it effectively treats sore throat, wind-cold common cold, and other respiratory inflammations such as bronchitis and pneumonia.
In Traditional Chinese Medicine, it is considered neutral in nature, bitter and pungent in taste. Functions include promoting lung Qi dispersion, expelling phlegm, and draining pus. Indicated for exterior wind-cold invasion, sore throat, lung abscess, cough with purulent sputum, bloody expectoration, dysentery with abdominal pain, etc.
Dosage: Generally 3–9 grams; avoid use in dry cough without phlegm.
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