Synopsis

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

Baphicacanthus cusia, also known as Qing Dai (青黛) in traditional Chinese medicine, has a long history of use for treating various inflammatory conditions, including canker sores (oral ulcers). Its use for this purpose is rooted primarily in traditional medical texts and folk remedies rather than robust scientific validation. Qing Dai is thought to possess anti-inflammatory and antimicrobial properties, which are believed in traditional practice to help reduce pain and promote healing in oral ulcerations.

Despite its widespread historical use, the scientific evidence specifically supporting Baphicacanthus cusia for canker sores is limited. A few in vitro and animal studies have demonstrated anti-inflammatory and antimicrobial effects of extracts from the plant, but clinical trials in humans for the treatment of oral ulcers are lacking. Most references to its utility for canker sores are found in compendiums of traditional Chinese medicine or in reviews discussing herbal approaches to oral health. Thus, while its use is justified by tradition and supported by some pharmacological rationale, high-quality clinical evidence is insufficient as of 2024. The evidence rating reflects the gap between traditional use and scientific validation.

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