Xylitol - sourced from Birch tree bark or corn cobs

[Whichway?]

I want to use this as a mouth rinse. My local health food store has one made from Non-GMO corn cobs, and claims it is better than those made from Birch tree bark.

As far as I know it is a sugar naturally found in berries, but obviously these are not a cost effective source.

As with all supplements I am wondering about contaminants that are either introduced in the purification process, or failed to be removed from the source material.

Does anyone have any ideas/thoughts on which may be the cleaner option overall?

 

[LucH]

Hi,
if the provider doesn't give any information on the way to produce, how could we give an advice which one is better. Need a purity certificate for heavy metals too.
Ok for rincing mouth but xylithol, as erythritol recently, have been marked as nocive for microbiote.