★★★★★
About 1 month later I also started drinking 2 tablespoons of unpasturized apple cider vinegar in 16 oz. Of water throughout the day, again for general health, and found that after 1 month my tongue was about 90-95% better. If you use a weaker solution it might just take longer to see results, but if that is what it takes to make it palitable then go for it. It seems counterintuitive to drink ACV for geographic tongue because the acid makes your tongue burn a little bit, but if you stick with it then you should see an improvement. Other things that help me are cutting out coffee and wine from my diet.