Biotene burns my mouth. And gives me heartburn but after the burning goes away I feel a bit better in my mouth but the heartburn?? I can't eat rolaids anylonger.Thre pills ( prilosec,etc) don't work the only thing I have found that works is a glass of baking soda and water or malox but that turns my tounge black is there anything else that is over the counter that I can try for dry mouth?