Hi, I use Biotene toothpaste to help with dry mouth, alternate through the day with Magic Mouthwash and Dexamethasone Elixor and for stubborn or more painful sores I use Zilactin-B. It hurts for a few seconds when I put it on, but then it numbs the area providing a few hours without pain, and it also protects it and encourages it to heal. Biotene also has a gel that I sometimes use to help with the dryness in my mouth, but if it’s all full of sores, I don’t bother with that and just frequently use the other meds I mentioned and am extremely careful in what I eat and drink!