For the last two years I have developed ulcers on the sides of my tongue. I have seen a dental specialist who told me that there is little to do for prevention. The pain is treated with topical ointment or a prescription for a rinse, benedryl pepto bismal liquid steroids. My insurance will not cover the rinse because it has to be mixed. The liquid is $40.00 and only lasts about 1.5 weeks. For a chronic problem, the cost is prohibitive.