Synopsis

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

Citrus species (Citrus spp.), such as oranges, lemons, and limes, have a long history of traditional use for alleviating cough and other respiratory ailments. In traditional Chinese medicine, citrus peels (especially from Citrus reticulata and Citrus sinensis) are used in formulas to help reduce phlegm and ease coughing. Similarly, in Ayurvedic and various folk medicine systems, lemon juice mixed with honey is a well-known home remedy for soothing cough and sore throat due to its perceived soothing, antimicrobial, and mucus-cutting properties.

However, scientific evidence specifically validating the efficacy of Citrus spp. for treating general cough is limited. Citrus fruits are rich in vitamin C and other antioxidants, which may support immune function, and some studies suggest vitamin C may modestly reduce the duration of respiratory infections, but its direct impact on cough symptoms is not clearly established. The essential oils in citrus peels have demonstrated some antimicrobial activity in laboratory settings, but clinical trials confirming a significant antitussive effect in humans are lacking.

In summary, while the use of Citrus spp. for cough is well-supported by traditional practices and anecdotal reports, robust scientific evidence for its efficacy is limited, resulting in a moderate evidence rating.

More about citrus spp.
More about Cough (general)

Other ingredients used for Cough (general)

Other health conditions supported by citrus spp.

Products containing citrus spp.