For the last 2 weeks, i have been doing a combination of taking Epsom Salt baths, foot soaks in magnesium chloride flakes, magnesium oil, natural calm supplement drink and the occasional magnesium supplement and my tongue is 90 percent better. I have had a coated tongue and geograhic tongue (both to varying degrees) for at least 20 years. At this point, i am pretty convinced that i have had a magnesium deficiency for many years. I will update this every so often. I wanted to post this for all the people who are searching the web looking for a solution. I also have other health issues that i am hoping will be solved also. Do yourself a favor and read the book transdermal magnesium Therapy and the magnesium miracle. Pills dont do much,if you want fast action and healing you have to apply it to skin or take the baths.