Synopsis

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

Pineapple has been traditionally used as a home remedy for canker sores (aphthous ulcers), largely due to its content of the enzyme bromelain and its high vitamin C concentration. Folk practices in various cultures suggest that eating fresh pineapple, applying small pieces of pineapple flesh, or even rinsing the mouth with pineapple juice can help soothe pain and potentially accelerate healing of mouth ulcers. The rationale behind its use is primarily attributed to bromelain’s purported anti-inflammatory and proteolytic (protein-digesting) properties, which some believe might help reduce inflammation and clear necrotic tissue. Additionally, vitamin C in pineapple may support general oral health and tissue repair.

However, the scientific evidence supporting the use of pineapple for canker sores is very limited. Only a few small studies or case reports have examined bromelain’s effectiveness in wound healing, and these do not specifically address canker sores. There is no substantial clinical trial data verifying that pineapple or its extracts are beneficial for aphthous ulcers. In fact, for some people, acidic fruits like pineapple can actually irritate mouth ulcers and worsen symptoms. Therefore, while pineapple’s use is rooted in tradition, robust scientific validation is lacking, and its effectiveness remains uncertain.

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