(Ulmus rubra)  

Slippery elm is often used in the treatment of inflamed digestive conditions such as colitis, diarrhea, duodenal ulcers, enteritis and gastritis.  It also may soothe coughs, colds and sore throats and is an  ingredient of some cough lozenges and cough syrups.  In a poultice, it treats abscesses, boils, minor burn and wounds.

Native Americans found innumerable medicinal and other uses for this tree.  Canoes, baskets, and other household goods were made from the tree and its bark.  Slippery elm was also used internally for everything from sore throats to diarrhea.   Slippery elm is also The mucilage of slippery elm gives it the soothing effect for which it is known.  The bark contains a host of other constituents, but the carbohydrates that comprise the mucilage are the most important.

Two or more tablets or capsules (typically 400–500 mg each) can be taken three to four times per day.   A tea, three to four cups a day, Tincture, 5 ml three times per day. 

Slippery elm is quite safe. However, because it is so mucilaginous, it may interfere with the absorption of medicine taken at the same time.