Synopsis

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

Agastache, particularly species such as Agastache rugosa (Korean mint), has a long-standing history of use in traditional East Asian medicine, especially within Traditional Chinese Medicine (TCM). It is commonly known as Huo Xiang and has been used in herbal formulations to address symptoms associated with coughs, colds, and respiratory discomfort, including spastic or spasmodic coughs. The main traditional rationale for its use involves its reputed ability to "dispel dampness," "harmonize the stomach," and alleviate symptoms related to external wind-cold invasion, which in TCM vocabularies often includes cough and respiratory spasm. However, the evidence supporting its effectiveness is primarily anecdotal and rooted in the centuries-old practices rather than modern clinical research.

There is limited scientific evidence directly supporting the use of Agastache for spastic cough. Some laboratory studies have suggested mild anti-inflammatory and antimicrobial effects, and traditional texts cite its use for respiratory complaints, but robust clinical trials are lacking. Thus, while Agastache is clearly documented in the traditional materia medica for cough, its use for spastic cough is justified more by historical practice than by contemporary scientific validation.

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