Synopsis

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

Oak bark (Quercus robur and related species) has a long history of traditional use in European herbal medicine for external ulcerations, wounds, and skin conditions. The bark is rich in tannins, which have astringent properties thought to help contract tissues, reduce bleeding, and promote healing by forming a protective layer over wounds. Historical texts and pharmacopeias from Europe and other regions frequently mention the use of oak bark decoctions or poultices for treating ulcers and other skin lesions. However, while the traditional use is well documented, there is only limited scientific research directly evaluating the efficacy of oak bark for external ulcerations. A few in vitro and animal studies suggest that tannin-rich extracts may have antimicrobial and anti-inflammatory effects, which could theoretically support wound healing. Nonetheless, robust clinical trials in humans are lacking, and most modern recommendations are based on historical rather than scientific evidence. Overall, while oak bark's use for external ulcerations is justified by tradition and supported by some plausible biological mechanisms, concrete scientific validation remains limited.

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