I got dry mouth (extremely painful!) with white spots all over it and excessive thirst also - bbut mine was stemming from a sinus infection. . It hurt to swallow, and various supplements and foods I took made my mouth progressively drier and more painful. I started doing sinus irrigation using 1/4 teaspoon of HIMALAYAN PINK SALT, 8 ounces of luke-warm water and ONE drop of Bragg's apple cider vinegar to irrigate each side of my nostril/sinus. I used a squeeze bottle instead of a Neti pot (much more effective!) and within days my horrible thrush and dry mouth cleared up!