When my xerostomia was at it's worst during the months right after treatment, I used my own concoction to keep my mouth from turning into the Sahara at night. I would mix USP glycerin with water and rinse with it, spitting it out afterwards into a cup by the bed. This put a little film of glycerin on my soft tissues that helped. Don't be drinking this concoction, it will give you the Mexican two step if you swallow too much of it. I don