Rene,The radiation Doc should have 5 or 6 different things for Mike to try for the mouth sores. [also, does anyone know if they are thrush or what???]- the same thing doesn't work for everyone. Chemo should not produce mouth sores unless he gets into trouble with vomiting. Hopefully he will not stop his chemo and both of you need to insist on choices of mouth rinces to try plus good pain meds. This is a tough time Mike is going through. Hope you both can hang in there. Amy