Synopsis

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

The use of Asteraceae family plants (such as chamomile, calendula, or echinacea) for canker sores (aphthous ulcers) is primarily rooted in traditional medicine. Various cultures have historically applied preparations of chamomile (Matricaria recutita), calendula (Calendula officinalis), or other Asteraceae members topically or as mouth rinses to soothe oral inflammation and promote healing of minor sores, including canker sores. The rationale for their use is often based on their reputed anti-inflammatory, antimicrobial, and soothing properties, observed in folk medicine.

Some preliminary studies and anecdotal reports suggest that extracts from certain Asteraceae species may reduce discomfort or accelerate healing in oral mucosal lesions, but robust clinical evidence is limited. Most studies are small, lack rigorous controls, or focus on single species like chamomile rather than the family as a whole. For example, a few clinical trials with chamomile mouthwashes or gels have demonstrated some benefit in symptom relief for aphthous ulcers compared to placebo, but these findings are not consistent or strong enough to be considered definitive scientific validation.

Overall, while the traditional use is well-documented, scientific support is modest and not broadly conclusive across the Asteraceae family. The evidence rating is 2, reflecting weak to moderate support from small or low-quality studies and extensive traditional use, but a lack of high-quality, large-scale clinical trials.

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