Synopsis

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

Chen pi (dried tangerine peel) has a long history of use in Traditional Chinese Medicine (TCM) for addressing digestive complaints, including belching. In TCM theory, chen pi is classified as a herb that regulates Qi (vital energy) and harmonizes the middle Jiao (digestive system). It is thought to move stagnant Qi in the stomach and spleen, which is often considered the root cause of symptoms such as belching, bloating, and a feeling of fullness. Historical materia medica texts, such as the "Compendium of Materia Medica" (Bencao Gangmu), describe chen pi's ability to "descend rebellious Qi"—a concept that aligns with the upward movement of gas or air experienced as belching.

While modern pharmacological studies have suggested that chen pi contains volatile oils and flavonoids that may promote gastric motility and secretion, most evidence remains preclinical and does not directly address belching as a symptom. Clinical trials specifically focusing on chen pi for belching are lacking, so current support for its use is predominantly based on traditional practice and anecdotal evidence. Nevertheless, its widespread use in TCM for centuries and inclusion in many classic digestive formulas lend moderate support for its traditional application. Thus, the evidence is rated as moderate (3) on the strength of tradition, but it should be considered with caution due to limited scientific validation.

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