I use biotene tooth paste and the mouth wash for the mouth ulcers. I also take 1 vitamin D and 1 calcium tablet each day along with 1 Inner Health Probiotic capsule, the probiotic really does help with the ulcers as it assist your stomach. You should check with your oncologist first about them as some oncologists dont like them. I have Tony Micheles who told me they were fine. Since I have been using them, the ulcers have reduced to only rough patches on the inside of my mouth. Ulcers are really trying and can make you feel really miserable, so give it a try if ok with the doctors. Good luck, hope they subside soon.