Evidence supporting the use of: Tea Tree
For the health condition: Thrush

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Synopsis

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

Tea tree oil (Melaleuca alternifolia) has been investigated for its antifungal properties, including potential activity against Candida species, the primary cause of thrush (oral or vaginal candidiasis). Laboratory (in vitro) studies have demonstrated that tea tree oil and its major components (such as terpinen-4-ol) can inhibit the growth of Candida albicans and other Candida species, often at relatively low concentrations. However, clinical studies in humans are limited and results are mixed.

Some small-scale clinical trials and case reports suggest that tea tree oil-containing products (such as vaginal pessaries or mouthwashes) may reduce Candida colonization and symptoms. Nevertheless, these studies are often preliminary, with small sample sizes, lack of blinding, and methodological limitations. Major medical organizations do not currently endorse tea tree oil as a primary or adjunctive therapy for thrush due to insufficient high-quality evidence and concerns about safety—especially the potential for irritation or allergic reactions when applied to mucous membranes.

In summary, while there is laboratory evidence for tea tree oil's antifungal activity and some early clinical indications, robust human data for its effectiveness and safety in treating thrush is lacking. Therefore, the evidence is rated as 2 out of 5, reflecting promising but unproven potential that warrants further research.

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Products containing Tea Tree

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