Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Fragrant Angelica (Angelica dahurica), also known as Bai Zhi in traditional Chinese medicine (TCM), has a long history of use in East Asian herbal practices. It is commonly used for its purported anti-inflammatory, analgesic, and antimicrobial properties. In TCM, Bai Zhi is sometimes included in herbal formulas aimed at addressing oral health issues, including canker sores (aphthous ulcers). The traditional rationale is that Fragrant Angelica can help "disperse wind," "reduce swelling," and "alleviate pain," which are TCM concepts loosely associated with symptoms such as swelling, pain, and ulceration in the mouth.

However, there is little to no direct scientific evidence supporting the efficacy of Fragrant Angelica specifically for canker sores. Most available studies focus on its phytochemical constituents (such as furanocoumarins) and their general anti-inflammatory or antimicrobial effects in vitro or in animal models, not on clinical trials for oral ulcers. Thus, the use of Fragrant Angelica for canker sores is justified mainly by traditional practices rather than robust scientific validation. While its inclusion in some compounded TCM remedies for mouth ulcers is documented, there is a lack of high-quality, controlled clinical studies specifically addressing its effectiveness for this condition.

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