Synopsis

Source of validity: Traditional
Rating (out of 5): 3

Chen pi (dried tangerine peel) is primarily used in Traditional Chinese Medicine (TCM) for its purported benefits in treating conditions like lung congestion, cough, and phlegm retention. The use of chen pi for lung congestion is rooted in centuries-old TCM practices. In traditional theory, chen pi is believed to regulate qi (vital energy), invigorate the spleen, dry dampness, and transform phlegm. It is commonly included in herbal formulas intended to address respiratory symptoms such as cough, chest tightness, and excessive phlegm, all of which are seen as manifestations of "phlegm-dampness" or "qi stagnation" in the lungs.

Historical texts such as the "Compendium of Materia Medica" and the "Shennong Bencao Jing" document the use of chen pi for treating respiratory complaints. The herb is described as having a warm, aromatic quality that helps move stagnant qi and dissipate phlegm, making it a staple ingredient in TCM formulas for bronchitis, asthma, and other lung-related conditions.

While modern pharmacological studies suggest that chen pi contains essential oils, flavonoids, and other constituents with expectorant and anti-inflammatory properties, robust clinical trials in humans are lacking. Thus, the primary justification for its use in lung congestion remains traditional, though some preliminary scientific findings are compatible with its traditional applications. The evidence rating is 3, reflecting strong traditional support with some scientific plausibility but limited high-quality clinical evidence.

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