Just because you have a white coated tongue though, doesn’t mean you will get tonsilloliths. What it does mean though is that you already have an accumulation of volatile sulfur compounds in the back of your throat and tongue and that you do have one of the components that are found in people with tonsil stones.
Many people have found that applying an oxygenating toothpaste to the back of the tongue and daily tongue scraping can help to eliminate their white tongue and return it to a nice, normal pink color.
To learn more about white tongue, post nasal drip and other causes of bad breath, I highly recommend that you download a free ebook called The Bad Breath Bible. This informational ebook, written by Dr. Harold Katz, tells you everything you need to know about the various aspects of bad breath, and how to effectively deal with them.