Thanks for the reply. The tablets I am using are round, so they would be quite difficult to cut evenly in half. i guess I should stick to 50 mg for at least a few more weeks, as the symptoms are strong, but not unbearable. If I won't get that much benefit from going to 100 mg, then I guess I might wait until I have very little in the way of symptoms at 50 mg before going to 100 mg.