Evidence supporting the use of: Thuja plicata
For the health condition: Skin (infections)

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Synopsis

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

Thuja plicata (Western Red Cedar) has a history of traditional use among Indigenous peoples of the Pacific Northwest for treating various skin infections, such as fungal infections, cuts, and wounds. Preparations made from the leaves or bark were often applied topically as poultices or washes. The antimicrobial properties of Thuja species are attributed to essential oils and compounds such as thujone, but most of the available evidence supporting its use for skin infections is rooted in ethnobotanical records rather than modern clinical trials. Several in vitro studies have demonstrated that extracts from Thuja species possess some antibacterial and antifungal activity, but specific research on Thuja plicata and its efficacy in treating human skin infections is limited. The evidence base is therefore largely traditional, with only preliminary laboratory evidence suggesting potential antimicrobial effects. Clinical trials or systematic studies confirming its safety and effectiveness for skin infections in humans are lacking, so its use is primarily justified by longstanding traditional practices rather than robust scientific validation.

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