People take slippery elm for coughs, sore throat, colic, diarrhea, constipation, hemorrhoids, irritable bowel syndrome (IBS), bladder and urinary tract infections, syphilis, herpes, and for expelling tapeworms. It is also used for protecting against stomach and duodenal ulcers, for colitis, diverticulitis, GI inflammation, and too much stomach acid. Slippery elm is also taken by mouth to cause an abortion.
Slippery elm contains chemicals that can help soothe sore throats. It can also cause mucous secretion which might be helpful for stomach and intestinal problems.