The white tongue issue most of you are probably referring to is called geographical tongue. This is only present in about 3% of the population. I was diagnosed with this about 3 years ago, and officially, there is no cure for it. I had searched high and low for one, and all official websites state there just isn't one. However, some sites have stated to brush with peroxide, but I haven't had much success with it. Sorry I couldn't offer a positive remedy.
white tongue: I am using Oral Peroxide, have been for apx. 2 months. Very little diff. Looking for home remedy that works.