I am taking Topamax 50mg for about 2 years now for migraine and from August 2012 I suffer from severe dry mouth and sore tongue and was tested for Sjorgens desease already which was negative. The doctors cannot find out the reason for the dry mouth. My health shop owner told me about the side effects of topamax and now I am possitive that Topamax is the cause of my dry mouth. How can I wean off Topamax to be able to see if the dry mouth will dissapear of not?