Probably normal: Having a white coating on the tongue surface is usually just debris caught in the papillae (bumps) of the surface. Scraping your tongue with a tongue scraper regularly can reduce this. Another possibility is that you have a fungal infection of your mouth and the white coating is fungal growth. In that case you need to be treated with an anti-fungal medication. See your dentist to find out.
Answered 3/13/2015
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