Sure do, nearly 9 years of dry mouth.
There are a couple prescription drugs that might help you so talk to your doctor about it.
For me none of the prescription drugs helped me. There are Xylamelt you can purchase on Amazon or if you have a dental hygienist school nearby they will probably have them too.
The Xylamelt made my mouth “gummy” so I stopped using them but many people have had good results from it so you might want to consider that?
For me: plenty of water and numerous tooth brushing throughout the day helps allot.
Purchase a prescription fluoride paste from your dentist and be sure to apply it at least twice daily, I apply it 2-4 times per day.
Neck message also helps many. Tens units and acupuncture can help too!
Hope this helped
Jody