Stevia makes me nauseous and gassy. I use Xylitol. Tastes like sugar, is natural and no gut issues.
There is a guy who invented a treatment for the Covid and of course other Corona viruses along the lines of Zicam. It is based on Xylitol.
Xylitol causes some people gas, and is toxic to dogs and cats. I’ve never tried it, but I hear it’s a good product, otherwise.