Evidence supporting the use of: Slippery elm bark
For the health condition: Dysentery

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Synopsis

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

Slippery elm bark (Ulmus rubra) has a long history of use in traditional herbal medicine, particularly among Native American tribes and early Western herbalists. It was commonly administered as a soothing remedy for gastrointestinal complaints, including dysentery, diarrhea, and other forms of digestive irritation. The inner bark contains mucilage—a gel-like substance that, when mixed with water, forms a soothing, demulcent coating. This mucilage is thought to protect and soothe the mucous membranes lining the gut, which can be beneficial during episodes of dysentery, where the intestinal lining becomes inflamed and irritated. Historical accounts from both Native American and colonial sources document the use of slippery elm gruel or tea to help reduce irritation and inflammation associated with dysentery and similar illnesses.

However, scientific validation for its efficacy specifically in treating dysentery is limited. While slippery elm's demulcent properties are well established in vitro and in animal studies, clinical trials in humans for dysentery are lacking. Most modern herbal references cite its traditional use rather than providing robust clinical evidence. Therefore, while its use is deeply rooted in tradition and supported by some plausible mechanisms of action, it should not be considered a substitute for evidence-based medical treatments for dysentery, such as rehydration and appropriate antimicrobial therapy.

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