Synopsis

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

Chen pi (dried tangerine peel) is primarily used in Traditional Chinese Medicine (TCM) and its application for colds, especially as a decongestant, is rooted in traditional rather than scientific evidence. In TCM, chen pi is believed to regulate qi, resolve phlegm, and harmonize the middle burner. It is frequently included in herbal formulas intended to address respiratory symptoms such as cough, phlegm, and congestion associated with colds. Historical texts and materia medica describe chen pi as effective in addressing "dampness" and "phlegm," concepts unique to TCM theory. However, these actions are described in metaphorical terms rather than through biomedical mechanisms.

There is limited scientific research specifically supporting the use of chen pi as a decongestant for treating colds. Some laboratory studies have shown that chen pi contains essential oils and flavonoids (such as hesperidin and nobiletin), which possess anti-inflammatory and antioxidant activities. However, these findings are preliminary and do not directly establish efficacy in treating the symptoms of colds or nasal congestion in humans. Clinical trials demonstrating clear decongestant effects in the context of colds are lacking. Therefore, while chen pi continues to be used in traditional herbal medicine for respiratory complaints, its use as a decongestant for colds is based mainly on traditional usage and not on robust scientific validation.

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