Karen
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        I would suggest finding a PEDIATRIC gastroenterologist.  This physician specializes in the stomach/intestinal problems of children and should know the newer medications or treatments for such things.  You may have to travel to a larger city to find one, but anyplace with a Children's Hospital would be a good bet.  Best of luck to you!