Synopsis

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

Citron (Citrus medica) has a long history of traditional use in various cultures, particularly in East Asia and the Mediterranean, for the prevention and management of colds. In traditional Chinese medicine and Korean folk medicine, citron teas and extracts are commonly consumed during the cold season for their supposed immune-boosting and cold-preventive properties. The fruit is rich in vitamin C and other antioxidants, which are believed to contribute to immune support, although direct evidence for its efficacy against the common cold is limited.

Scientifically, there is a lack of robust clinical research specifically investigating citron’s effects on cold prevention or treatment. Most evidence is extrapolated from general studies on vitamin C and citrus fruits, which suggest some benefit for immune health, but do not single out citron as uniquely effective. Therefore, while citron is widely used in traditional remedies for colds, scientific validation for these claims remains weak, and its use is better classified as traditionally justified rather than scientifically proven.

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