question: Hi,  I am concerned about drymouth and halitosis when I wake up.  I believe I am a mouth breather when asleep, because my nose when lying done tends to be blocked on which ever side I sleep on.    When I go to the dentist I tend to overproduce saliva?     How do I prevent dry mouth at nite and coated tongue with halitosis???I am over 70, take no meds, very healthly except for a higher BMI than I would like.