Need an artificial saliva with NO sweeteners or flavor :)

Hello, I need to find a tube of artificial saliva with no taste. Or at least no intense sweetener and flavor.

my mom has TN along with Sjogrens. The sweetness triggers the intense pain.
dryness seems to trigger the nerve pain a lot as well so I’m searching for the best saliva. Would love a gel rather than a spray.

Thank you for any suggestions.

A dentist gave me a sample of XyliMelts. No flavor, no sugar. He said they are available at RiteAid. Safe to put in your mouth at night.

I use Salivix salivary stimulant pastilles- they have a little artificial sweetener in them, but not too much- they’re not as sweet as the Biotene gel.