Biotene, has a pricey chewing gum besides the oral rinse. I was told by my dentist to use it for dry mouth, which some of us get as we approach menopause, besides being on meds.
It helps cut back on tooth decay which occurs more readily if the saliva isn't as plentiful as normal, allows certain bacterias to flourish.
I have to check Wal-Mart's prices vs, our local A&P grocery store.
Just my 2 cents, I saw "Biotene" and it drew my attention to this thread.

Take care y'all,
DE