Slipper Elm (Ulmus rubra) has for centuries been used by the indigenous people of North America, and later by European settlers. Among other things, Slippery Elm has been used to treat gastrointestinal disorders (acid reflux, inflammatory bowel disease, IBS, constipation and diarrhea. Slippery Elm is a is a demulcent. Demulcents are herbs that contain distinct mucus that provides a cooling and moisturizing coating that works for to reduce inflammation The mucilage has a soothing and protective effect on the stomach, and has also been used to treat urinary tract inflammation. In the United States, Slipper Elm is approved for sale by the FDA as an over-the-counter preparation for a number of ailments.