[quote=John of arc]how did you use the club soda?[/quote]I just swished it around and eventually swallowed it. If the bubbles bother you - just use it flat. I imagine it's similar to the baking soda/salt rinse, but handier as you don't have to make it or spit it out.
Even now, I find it helps with dry mouth and cutting mucous. I take a couple of cans with me when I go out.

My radiologist told me to use it. I think a few people here use it too.