Evidence supporting the use of: Japanese Kadsura
For the health condition: Cough (spastic)

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Synopsis

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

Japanese Kadsura (Kadsura japonica), known as "Kadsura" in traditional East Asian medicine, has been used in Chinese and Japanese herbal remedies primarily for its reputed anti-inflammatory, analgesic, and tonic properties. Its use in treating cough—particularly spastic or persistent coughs—derives from traditional applications documented in some historical texts of Kampo and Chinese medicine, where it is sometimes included in multi-herb formulations for respiratory complaints. However, the specific evidence for Kadsura japonica alone as a cough remedy is limited, with most references focusing on its general use for "qi" regulation and promoting circulation rather than direct antitussive effects.

There is little to no robust clinical or laboratory evidence supporting Kadsura japonica’s efficacy for cough suppression in modern scientific literature. Most studies on Kadsura species explore their potential anti-inflammatory and antioxidant compounds, but not specifically in the context of cough or airway hyperreactivity. Thus, current support for its use in spastic cough is primarily traditional, based on historical precedent rather than contemporary validation. The overall quality and quantity of evidence is modest (rated 2/5), reflecting its traditional but not well-substantiated use for this condition.

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