I rinsed with salt water twice a day, I did get ulcers but werent super bad, if they are, the best thing you could use is KENNALOG, its a cortisone paste and you use it at night as you can't speak LOL. Beats anything that they can give you, even gels or mouthwash, not necessary. Dental wasn't an issue at all, a quick checkup would be fine, I had one also after chemo to make sure and been absolutely fine no problems at all.
Coloxyl tablets for Constipation, make sure you hydrate the day before chemo too, another tip if youre having canulas, keep your arms and hands warm in the morning before you go in, helps with your veins.
Melinda xo