Synopsis

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

Agastache (commonly known as Korean mint or huò xiāng in Traditional Chinese Medicine) has traditionally been used in East Asian herbal medicine for various respiratory ailments, including dry coughs. Historical texts and materia medica from China, such as the “Compendium of Materia Medica” (Bencao Gangmu), describe its use as an aromatic herb to "transform dampness" and relieve symptoms related to coughs, especially those associated with dryness or phlegm retention. The herb is often included in multi-herb formulations aimed at restoring lung function and moistening the lungs. However, modern scientific studies directly investigating Agastache’s efficacy for dry cough are limited. A few pharmacological studies have identified anti-inflammatory, antimicrobial, and antitussive compounds in the plant, but these studies are preliminary and not specific to dry cough. As a result, while traditional use is well-documented, robust clinical evidence supporting its effectiveness for dry cough is lacking. Its continued use for cough in traditional medicine is based more on historical precedent than on rigorous modern validation.

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