Evidence supporting the use of: Slippery elm bark
For the health condition: Parasites (general)

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Synopsis

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

Slippery elm bark (Ulmus rubra) has a longstanding history of use in traditional herbal medicine, particularly among Native American and early North American herbalists. It is primarily valued for its mucilaginous (gel-forming) properties, which can soothe the digestive tract, relieve irritation, and support gut health. In traditional herbal literature, slippery elm is sometimes included as part of broader gastrointestinal health formulas, including those intended to address issues like diarrhea, inflammation, and irritation from various causes, such as infection or parasitic infestation. However, its role is generally supportive rather than directly antiparasitic; the mucilage can help protect inflamed tissues and promote healing, potentially aiding the body in recovering from the damage caused by parasites. There is little direct evidence—either traditional or scientific—that slippery elm bark itself kills or expels intestinal parasites. Instead, its use is based on its ability to soothe the gut lining, reduce discomfort, and support the repair of intestinal tissue. Modern scientific research does not provide evidence for direct antiparasitic effects, and authoritative sources do not list slippery elm as a primary remedy for parasites. Thus, its use in this context is justified mainly by tradition and general gut-supportive properties, not by targeted antiparasitic action.

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