For years I stuggled with white tongue. I tried so many different therapies from this site and others with marginal effect. It appears I found the problem for me... An allergy to dairy. After about a month avoiding dairy I have a healthy pink tongue, no more phlegm in my throat, and a happy outlook. I don't know if this will help anyone, but hopefully it will... there may be nothing that you can put in your body to cure your white tongue, but maybe there's something you can stop putting in your body that will help.