Synopsis

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

Calendula (Calendula officinalis), commonly known as marigold, has a long history of traditional use for various skin and mucosal conditions, including canker sores (aphthous ulcers). Herbalists and traditional medicine practitioners have employed calendula preparations—such as tinctures, teas, or topical rinses—for their perceived soothing, anti-inflammatory, and wound-healing properties. The rationale is largely based on calendula's reputed ability to reduce inflammation, promote tissue repair, and provide mild antimicrobial effects, which could be beneficial for minor mouth ulcers.

Scientific validation for calendula’s use in treating canker sores is limited but not entirely absent. Some small clinical studies and laboratory experiments have demonstrated that calendula extracts possess anti-inflammatory and antimicrobial activities, and there are a few trials (mainly outside of major Western medical literature) suggesting calendula mouthwashes may help reduce pain and speed healing in aphthous ulcers. However, these studies often have small sample sizes, lack rigorous controls, or are published in less prominent journals. Most mainstream medical guidelines do not recognize calendula as a standard treatment for canker sores, citing insufficient high-quality evidence. Thus, while historical and preliminary scientific data suggest potential benefit, robust clinical evidence is lacking, and calendula’s use for canker sores is best characterized as rooted in tradition with some modest scientific support.

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Other ingredients used for Canker Sores

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