Synopsis

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

Cayenne pepper (Capsicum annuum), primarily due to its active compound capsaicin, has been traditionally used in some cultures to alleviate pain associated with canker sores (aphthous ulcers). The rationale is that capsaicin can desensitize nerve endings and reduce pain sensation. Historically, small amounts of cayenne have been incorporated into topical pastes or rinses as a folk remedy to numb the affected area and potentially promote healing.

However, the scientific evidence supporting this use is minimal. There are a few small, low-quality studies and anecdotal reports suggesting that topical capsaicin may help with oral pain, but these are not specific or robust enough to firmly establish efficacy for canker sores. Most mainstream medical sources do not recommend cayenne as a standard treatment for aphthous ulcers, citing lack of controlled clinical trials and the potential for irritation or discomfort upon application. Therefore, while the use of cayenne for canker sores is rooted in traditional practices, scientific validation is weak, and evidence quality is low.

In summary, cayenne's use for canker sores is supported by tradition rather than strong scientific evidence, and those who choose to use it should do so with caution due to the potential for irritation.

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