Biotene Toothpaste helps dry mouth tremendously. I use Colgate Total in the AM and Biotene at night. They also have mouthwash, oral gel for nightime, and gum. The gel is great. Forget the gum it's expensive and Orbit sugar free does the same thing. Toothpaste is about 5.50 at Walmart.
Not as thristy anymore since using the Biotene.