Synopsis

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

Dwarf lilyturf (Ophiopogon japonicus), known as "Mai Men Dong" in traditional Chinese medicine (TCM), has a long history of use for various oral and throat conditions, including canker sores (aphthous ulcers). In TCM theory, canker sores are often attributed to "Yin deficiency" or "internal heat," and Dwarf lilyturf is considered a "cooling" and "moistening" herb that nourishes Yin and clears heat. Classical TCM texts and modern herbal compendia frequently list Ophiopogon japonicus as an ingredient in formulas intended to soothe inflamed mucous membranes, promote healing, and relieve oral discomfort.

However, scientific validation for its effectiveness specifically in treating canker sores is limited. While Ophiopogon japonicus contains saponins, polysaccharides, and homoisoflavonoids with reported anti-inflammatory and immunomodulatory effects in laboratory and animal studies, there is a lack of well-designed clinical trials evaluating its efficacy for aphthous ulcers in humans. Most evidence supporting its use for canker sores is thus rooted in traditional practice and anecdotal reports rather than robust scientific research. As such, the evidence supporting Dwarf lilyturf for canker sores is primarily traditional, with a moderate level of support based on longstanding use but minimal clinical validation.

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