I had a white bump on my tongue ... went to an ENT and he removed it. Said it was benign - eat drink and be merry. Well, since I also have depression and anxiety, 2 weeks after my doctor put me on Zoloft. I experienced really bad 'dry tongue'. I felt worse. I thought it was a reaction to the Zoloft, so I stopped taking it. Now my tongue gets very dry in the morning. I use Biotine, but it only helps a little while. After I eat lunch, which has been just turkey sandwiches, it feels a little better. I used to drink a lot of Snapple Lemon diet ice tea, but that seems to make things worse. I can't figure out what it is and of course I think IT'S TONGUE CANCER and they have to cut out of my tongue. When I went on this website I see a lot of people are suffering with the same problem. I have seen that some people say Alpha Lipoic Acid helps. I am going to try it. It is making me more depressed and anxious.