Husband is still dry--little saliva--after more than 2 years out but manages by sipping water during the day and using great mouthwashs for dry mouth--OASIS or BIOTENE--several times during the night. When he gets up during night he rinses quickly w/ one of these and can then sleep several hours w/ no water sipping. Great products! Has to get up anyway to urinate from all of the water and BOOST (liquid nutrition) he gets during the day. Gum helps during extra dry times too; sugarless due to problems which could be caused by sugar on his few teeth!