Synopsis

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

Rhus coriaria, commonly known as sumac, has a longstanding history in traditional medicine for the treatment of oral ailments, including canker sores (aphthous ulcers). Historical sources and ethnobotanical surveys from regions such as the Middle East and Mediterranean document the use of sumac fruits and extracts for oral health, specifically as a remedy for mouth ulcers, gingivitis, and mouth inflammation. The rationale behind its use is primarily due to sumac’s astringent and antimicrobial properties, attributed to its high content of tannins and polyphenolic compounds. These constituents are believed to aid in reducing inflammation and promoting healing of mucosal tissues.

While some in vitro and animal studies have indicated that Rhus coriaria possesses antimicrobial and anti-inflammatory activities, there is a lack of robust clinical trials directly evaluating its efficacy in the treatment of canker sores in humans. Thus, its use is primarily justified by tradition and ethnobotanical reports rather than strong scientific evidence. The traditional application often involves rinsing the mouth with decoctions or infusions of the dried fruits or leaves. In summary, while Rhus coriaria has recognized traditional use for canker sores, scientific validation remains limited, and more clinical research is needed to confirm its effectiveness in this context.

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