Pineapple helped to get rid of my white tongue. I'm not sure why, I think it has an enzyme or chemical in it that causes the tongue coating to dissolve. Eat at least a couple of bites once or twice a day. This helps, but is not enough alone. The proper oral routine is necessary too. I found that brushing twice a day with a sls-free toothpaste allowed my tongue to shed normally and remain pink and healthy, which wouldn't happen with regular toothpaste. And don't use mouthwash or brush or scrape your tongue. Oil pulling once a day will help as well.