What Causes Canker Sores While Having IBS?
Orabase or Orajel will help
It is common to have canker sores while dealing with chronic gut issue including IBS. You should also stop having coffee, strawberry, nuts cheese and eggs. You should check for Vitamin B, Zinc and Folic acid deficiency. If yes you can straight start the supplements available. If you have stomach ulcers then H.pylori bacteria also causes canker sores.
Orabase is a good anesthetic mouth paint that helps before food. Similarly Orajel is often prescribed by doctors.