I have a white coated tongue, some red patches intermittently. After coffee, tea, some nuts, tongue feels beefy and throat feels effervescent, sore and somewhat constricted. Allergy tests were all negative, yeast was ruled out. Nystatin, mouth rinses, peroxide washes, salt gargles apple cider vinegar rinses. Nothing seems to alleviate the symptoms. This has been going on for about 9 months. No vitamimn deficiencies. Any suggestions?