For a while there I was waking in the night with a painful pinching sensation where my mouth had dried out. I looked around for a solution and found XyliMelts tablets. One side adheres to a tooth, to prevent choking on it during the night. The tablets release a moisturizing ingredient all night long. The flavor is mild and pleasant. They are available in mint and in mint free.
Since using XyliMelt, I’ve slept all night, never waking with painful dry mouth.
My local store doesn’t carry them; I bought them on Amazon.