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Ce produit n'est pas destiné à diagnostiquer, traiter, guérir ou prévenir toute maladie. Ces déclarations n'ont pas été évaluées par la Food and Drug Administration.
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Ces informations sont fournies à titre éducatif uniquement et ne remplacent pas un avis médical professionnel, un diagnostic ou un traitement. Consultez toujours votre professionnel de santé avant d'utiliser des plantes, surtout si vous êtes enceinte, allaitez, prenez des médicaments ou avez une condition médicale.
Quercus alba
North American white oak; bark used by many Indigenous peoples and Western herbalists as powerful astringent for diarrhea, wounds and skin conditions.
White Oak Bark (Quercus alba) is a traditional astringent used by Indigenous peoples and Western herbalists for diarrhea, wounds, and skin conditions. Its primary active compounds include tannins, ellagitannins, gallic acid, and flavonoids, which contribute to its antimicrobial, anti-inflammatory, and wound-healing properties. Evidence for its efficacy is primarily based on traditional use and limited clinical studies (Evidence Level C).
The high tannin content in White Oak Bark exerts astringent effects by binding to and precipitating proteins in the gastrointestinal mucosa, forming a protective layer that reduces permeability and fluid loss in diarrhea. Ellagitannins and gallic acid exhibit antimicrobial activity by disrupting bacterial cell walls and inhibiting biofilm formation. Flavonoids such as catechin contribute to anti-inflammatory effects via inhibition of cyclooxygenase (COX) and lipoxygenase (LOX) pathways, reducing prostaglandin and leukotriene synthesis. Topical application promotes wound healing through enhanced collagen deposition and angiogenesis, likely mediated by tannin-induced protein cross-linking and antioxidant activity.
North American white oak; bark used by many Indigenous peoples and Western herbalists as powerful astringent for diarrhea, wounds and skin conditions.
White Oak Bark (Quercus alba) is a traditional astringent used by Indigenous peoples and Western herbalists for diarrhea, wounds, and skin conditions. Its primary active compounds include tannins, ellagitannins, gallic acid, and flavonoids, which contribute to its antimicrobial, anti-inflammatory, and wound-healing properties. Evidence for its efficacy is primarily based on traditional use and limited clinical studies (Evidence Level C).
The high tannin content in White Oak Bark exerts astringent effects by binding to and precipitating proteins in the gastrointestinal mucosa, forming a protective layer that reduces permeability and fluid loss in diarrhea. Ellagitannins and gallic acid exhibit antimicrobial activity by disrupting bacterial cell walls and inhibiting biofilm formation. Flavonoids such as catechin contribute to anti-inflammatory effects via inhibition of cyclooxygenase (COX) and lipoxygenase (LOX) pathways, reducing prostaglandin and leukotriene synthesis. Topical application promotes wound healing through enhanced collagen deposition and angiogenesis, likely mediated by tannin-induced protein cross-linking and antioxidant activity.