Angel
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        I too get mouth ulcers about once every week.  I use Lysine and Tee Tree Oil.  The oil MUST be from the Melaluca Tree (there are many imitations of the oil).  I simply dot the oil on the sore full strength about 4 - 5 daily.  Usually they are gone in 2 days. How did you discover it was sugar that was causing the sores?