Evidence supporting the use of: Buddha's Hand
For the health condition: Colds (decongestant)

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Synopsis

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

Buddha’s Hand (Citrus medica var. sarcodactylis) has a long history of use in traditional Chinese medicine (TCM) as a remedy for respiratory issues, including colds and congestion. In TCM, it is known as "Fo Shou" and is believed to regulate qi, resolve phlegm, and relieve coughs. The fruit is aromatic and used in herbal formulas for its supposed ability to open nasal passages, reduce phlegm, and ease chest congestion. Historical texts, such as the “Compendium of Materia Medica” (Bencao Gangmu), document its use for these conditions.

However, scientific evidence supporting the decongestant effect of Buddha’s Hand is limited. Phytochemical analyses show that it contains essential oils, such as limonene and citral, which have mild anti-inflammatory and antimicrobial properties. These compounds may contribute to a subjective feeling of relief, but there are few clinical studies directly validating its efficacy as a decongestant or cold remedy. Most modern research focuses on its antioxidant and antimicrobial activity in vitro, rather than its effects in humans. Thus, while traditional use is well-documented, scientific validation is lacking.

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