Synopsis

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

Mentha haplocalyx (commonly known as Chinese mint or Bo He) has a long history of use in Traditional Chinese Medicine (TCM) to treat "cough with dampness," a symptom pattern characterized by cough accompanied by phlegm, chest oppression, and a sensation of heaviness. In classical TCM texts, Bo He is described as having cooling and dispersing properties, particularly effective for "wind-heat" patterns, but is also sometimes applied in formulas addressing dampness in the lungs. It is typically used in combination with other herbs to help "release the exterior," clear the head, and disperse stagnation, which may help alleviate cough associated with respiratory tract infections or seasonal ailments.

While there is some modern pharmacological research indicating that Mentha haplocalyx contains menthol and other volatile oils that may have antitussive (cough-relieving), anti-inflammatory, and mild antimicrobial effects, these studies do not directly address the specific TCM concept of "damp cough." The bulk of its application for this condition is based on traditional use rather than rigorous clinical trials. Therefore, its use for "cough (damp)" is primarily justified by tradition, with moderate traditional evidence but limited direct scientific validation for this particular indication.

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