Thrush is basically an overgrowth of yeast in the mouth. Yeast is suppressed by the presence of probiotics, or good bacteria. Yeast thrives in damp environments and feeds on starch and sugar substances. My MO was two fold: introduce more probiotics into her diet and cut out sugary foods.
I went to the health food store in our area and picked up a bottle of Acidophilus powder. Its label proclaims it contains 5 billion CFU per gram. Not exactly sure what that means, but 5 billion anything is alot to cram into one gram. Sounds concentrated enough for me!