I feel that I shouldn't be adding anything to Gail's detailed account above, since I was fortunate not to have had radiation. However, I do have a dry mouth problem at night, and I have found great comfort in using a small trigger-style spray bottle, as is used for misting plants or laundry, which sends out a very fine mist. I spray it all though my mouth and into my throat. It moistens my throat and mouth and teeth (which want to stick to my lips because of their dryness) without contributing much that needs to be swallowed......I can spray enough for a small drink if I prefer, and still it is easier than drinking out of a glass. I keep it beside my bed, and I use it a number of times during the night. I find it a great comfort. Maybe this idea would be of help to someone with dry mouth, or with sores in their mouth, and with difficulty swallowing.