Synopsis

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

Citrus nobilis, commonly known as mandarin orange, has a history of use in traditional medicine systems, particularly in East Asia. In Traditional Chinese Medicine (TCM), the dried peel of Citrus nobilis (known as "Chen Pi" or "Ju Pi") is often used as an ingredient in herbal formulas to address respiratory issues, including general coughs and phlegm. The traditional rationale is that it helps to regulate Qi (vital energy), transform phlegm, and relieve cough by facilitating the proper movement of lung and digestive energies. Its bitter and aromatic properties are believed to disperse congestion and help clear the airways.

Despite significant historical use, scientific evidence supporting the efficacy of Citrus nobilis peel or its extracts for treating cough is limited. Some laboratory studies have identified bioactive compounds such as flavonoids and essential oils within the peel, which may possess mild anti-inflammatory or antitussive effects. However, robust clinical trials in humans are lacking, and its use for cough remains largely grounded in tradition rather than modern scientific validation. Thus, while Citrus nobilis is widely used in traditional remedies for cough, current evidence does not strongly support its effectiveness from a scientific standpoint.

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