I just tried them again, using a different method: I put one on each side of my mouth between cheek and gum, the result was a thick, sticky, "saliva", more like phlegm, that was somewhat uncomfortable. I had to get up once to wash off my lips that were sticking together. However, I made it through the night, and beyond, with NO dry mouth so I think that it is definitely worth it.

There is a competitor product, Xylimelt patches, which I have ordered. I'll review and compare them once I've tried them.