Synopsis

Source of validity: Traditional
Rating (out of 5): 1

White oak (Quercus alba) bark has a history of use in traditional herbal medicine, particularly among Native American and early European settlers in North America, for a variety of ailments including diarrhea, inflammation, and wounds. Its application for ulcers—both internal (such as gastric ulcers) and external (such as skin ulcers)—comes primarily from this traditional background. The bark contains tannins, which are astringent compounds believed to soothe inflamed tissues, reduce secretions, and promote healing, making it a logical traditional remedy for ulcerative conditions. However, while the astringent and anti-inflammatory properties of tannins are well-documented in general, there is a lack of robust, modern scientific research specifically investigating the efficacy of white oak bark for treating ulcers. Most available scientific literature focuses on its antimicrobial and astringent actions, with some in vitro studies suggesting potential anti-inflammatory effects, but these are not directly tied to clinical outcomes in ulcer treatment. Therefore, the use of white oak for ulcers remains rooted in traditional practice rather than scientific validation, and its evidence rating is low. Individuals considering its use should consult healthcare professionals, as the safety and efficacy for this specific indication are not well established.

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