When I was a kid (MANY years ago, since I am now almost 66), I suffered with mouth ulcers very often. I remember putting something called Alum on them. Back then I never heard of IBD. At age 39, I was finally diagnosed with IBS. It was not until age 52, when I developed HORRIBLE symptoms, bleeding, urgency, pain, etc., that I was diagnosed with UP. I had a total colectomy with end ileo in 2010 and STILL get those mouth ulcers. However, not as often as in the past. Gargle with salt water 4 times daily. Works for me.