Biotene line of products for dry mouth. Spray is effective for me, especially epiglottis/swallowing.
Xylimelts also daytime, not just cpap night time. Outlasts short life lozenges! Can't chew gum!!
Xylitol powder as substitute for sugar upset my GI tract. Xylimelts and Biotene don't. Each patient/person is unique to what helps or not, or irritates. One person's negative review is not the endall.