Fanfaire,
I've read posts from others on the Sjogren's forum that support what you are saying. When the dryness comes from within, it's hard to hydrate. I have found that drinking the miniumum required amount of water with my meals, (I have to in order to wash food down) will help with the overall dryness. But you have to let the mouth and nose have a certain amount of mucus or all the membranes dry out too much.

Billye