Synopsis

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

Tangerine (Citrus reticulata) has a history of use in traditional Chinese medicine (TCM) primarily in the form of its dried peel, known as "Chen Pi." According to TCM, Chen Pi is valued for its ability to regulate qi (energy), resolve phlegm, and help relieve cough, particularly when associated with phlegm and digestive disturbances. While tangerine peel is more commonly used for productive coughs (those with phlegm), it may also be included in herbal formulas for dry coughs, especially when accompanied by qi stagnation or digestive symptoms. The use of tangerine peel for respiratory ailments is documented in TCM texts dating back centuries, and it remains a staple in many classic herbal formulas. However, scientific evidence supporting the use of tangerine or its peel specifically for dry cough is limited. Some laboratory studies have identified anti-inflammatory and antioxidant properties in tangerine peel constituents such as flavonoids and essential oils, suggesting potential for respiratory benefit, but these findings are preliminary and not directly linked to clinical outcomes in dry cough. Most research focuses on general respiratory health or on coughs associated with phlegm rather than specifically on dry cough. Thus, while the traditional use is well established, robust scientific validation for its use in treating dry cough is lacking.

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