Synopsis

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

Agastache, particularly species such as Agastache rugosa (Korean mint), has a long history of use in traditional medicine systems, especially in East Asia. In Traditional Chinese Medicine (TCM), Agastache (known as "Huo Xiang") is commonly used to address respiratory ailments, including cough, phlegm, and bronchial congestion. The herb is believed to have aromatic, warming, and dampness-resolving properties, which are thought to help clear congestion from the lungs and airways. Historical texts and ethnobotanical records document its use in herbal formulas aimed at relieving symptoms of colds, flu, and bronchitis.

From a scientific perspective, there is limited direct evidence supporting Agastache’s efficacy specifically for bronchial congestion. Some studies have identified essential oils and compounds (such as methyl chavicol and limonene) in Agastache species with mild expectorant, anti-inflammatory, and antimicrobial activity in vitro or in animal models. However, these findings have not been robustly confirmed in human clinical trials targeting bronchial congestion. Therefore, while the traditional use is well established, scientific validation remains preliminary and insufficient for strong recommendations. Most support for Agastache’s use in bronchial congestion is thus rooted in traditional practice rather than modern clinical science.

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