Hello
I have the same problem and I was just wondering if you tried the activated charcoal that was recommended on this thread or any other recommendations and if anything has worked.
I have tried so many things and had small successes: addressing the yeast, has significantly reduced the white coating on my tongue and reduced the "strength" of the bad breath but the core problem is there. Also with the help of hydrogen peroxide and the baking soda/sea salt tongue scrub, my teeth and tongue are sparkly white and healthy non-coated pink. I'm told by doctors and dentists that they've never seen such a clean mouth. They are stumped by extreme halitosis.