I use evoxac (prescript
ion) - it helps with dry mouth and salivary gland issues. I got the prescript
ion from my rheumy after I started having issues with salivary glands/dry mouth.
If you are not interested in prescriptions, I have used Biotene dry mouth toothpaste and biotene dry mouth spray at night in the past. Before starting evoxac I used to keep the biotene dry mouth spray right by my bed and spray my mouth at least two or three times a night - a really big life saver for me.
Good luck.