I'm up to 400mg of Diflucan a day and still have many problems with thrush. The nurse's aid recommended yogurt w/acidolpholis in it - let it sit in your mouth. Drinking sugary drinks exacerbates it - like cokes or chocolate, I have switched to cranberry juice diluted w/soda and a squeeze of fresh lemon (at least as much as I can tolerate). Thanks for the tip on that site - I'm going to check it out.