I have had a mild case of dry mouth for several years now. It started with a tooth whitening process from the dentist. After having the tray in my mouth for 1 night, I starting coughing up mucus, a lot of mucus, and had a hard time swallowing. I went to the hospital and they thought it was an allergic reaction to possibly the mint flavor of the whitening agent. It took a very long to to getting back to normal, but a dry mouth was the end result with post nasal drip. Just last week, I used a mouth guard the dentist made for me, and the the dry mouth is bad something terrible. But there is no more post nasal drip! I can t get relief of this terrible dryness inside my cheeks and around my teeth. Even my lips feel horrible. Drinking water just isn t helping with the dryness. Sugarless gum stimulates the saliva somewhat, but no real relief . I have had a mucus problem ever since the initial whitening fiasco. Could I have mucus plugged up in the salivary glands possibly? Thanks so much for your help, Jeanne