I was given a mouth wash by the chemo pharmasist which was slightly minty flavoured bicarbonate type, it was a commercial one, so you should be able to buy it if you can't stomach the bicarbonate and water mix. I rinsed four times a day religiously with the bicarbonate and water mix, and only ever got one bad ulcer. Kennelog at night fixed that quickly, I used Medigel during the day, Kennelog is too thick for daytime use. The FEC affected my gums badly, made them very rough, like a cats tongue, and receded from my teeth, which is why I was so worried about using the mouthwash so often.