Evidence supporting the use of: Slippery elm bark
For the body system: Peyer’s patches

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Synopsis

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

Slippery elm bark (Ulmus rubra) has a long history of use in North American herbal medicine, primarily for soothing the digestive tract and calming mucous membrane irritation. Its primary traditional applications include treating sore throats, coughs, and gastrointestinal complaints such as gastritis and ulcers. The use of slippery elm bark to "support the Peyer's patches body system" is not commonly documented in either traditional herbal texts or modern scientific literature. Peyer's patches are lymphoid tissues in the small intestine involved in the immune response to antigens in the gut. While slippery elm's mucilage may have a demulcent effect that soothes the gut lining, there is little to no direct evidence—either traditional or scientific—tying its use specifically to the health or function of Peyer's patches. The broader notion of supporting gut health may have led to speculative claims about immune benefits, but these are not substantiated by robust studies or historical records focused on Peyer's patches. Thus, the justification for using slippery elm bark in this context is traditional, based on its general use for gut soothing, with weak specific evidence for immune system or Peyer’s patch support.

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