Slippery elm (Ulmus rubra) is a deciduous tree native to North America with an inner bark containing vitamin E and bioflavonoids along with complex polysaccharides that absorbs and traps water and forms a a gel-like mucilaginous substance that can be easily broken down by bowel flora. Slippery elm bark was used by Native Americans to soothe irritated and inflamed skin, heal wounds, and treat cough and sore throats, and it is now most commonly used to increase gastrointestinal mucous secretion and protect the stomach and small intestine in cases of dyspepsia, gastritis, gastric reflux, peptic ulcers and gastrointestinal inflammation.
Sego, S.F.N.P.C.D.N.P., Slippery elm. The Clinical Advisor : For Nurse Practitioners, 2016. 19(5): p. 123-124.
What Extremely Alive Tonics Contain Slippery Elm?