Synopsis

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

Ligusticum, particularly species such as Ligusticum sinense and Ligusticum chuanxiong, has a long history of use in traditional Chinese medicine (TCM) and Native American herbalism. In TCM, Ligusticum (often referred to as "Chuan Xiong" or "Gao Ben") is believed to disperse wind and relieve pain, and is sometimes incorporated into formulas aimed at alleviating symptoms of the common cold, headache, and certain respiratory complaints, including coughs—though more often for coughs associated with wind-cold invasion rather than specifically dry coughs. In Native American herbal traditions, Ligusticum porteri (osha root) has been used as a remedy for sore throat, bronchitis, and cough.

However, robust clinical or pharmacological evidence to support its efficacy for treating dry cough is lacking. Some laboratory studies have identified anti-inflammatory and antimicrobial properties in Ligusticum extracts, which could theoretically relieve respiratory irritation. Yet, these findings do not directly translate to clinical effectiveness for dry cough, and high-quality human trials are absent. The rating of 2 reflects the moderate level of traditional use for respiratory symptoms, but the absence of strong clinical validation specifically for dry cough.

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