@deb26 I'm six months post treatment and still have no saliva however I'm told it will come back to some degree. My mouth is always VERY dry. For sleeping I place two Xylimelts in my mouth before I go to bed and they definitely help. I find so many of the over the counter remedies do little or nothing however I know these work because if I forget to take them I wake up within an hour or so and am quickly reminded. Give them a try.