In the following link, it says that the product
May contain trace amounts of naturally occurring sulfite residue
I asked the manufacturer about it and the explanation I got was:
The trace amounts of naturally occurring sulfites are present in hydrolyzed collagen (as are most other proteins as well). The sulfur that holds the bonds between the molecules is broken up from these processes and changes them to sulfite
Does anybody knows the exact chemical form of the sulfite that this product contain?
Is it in the form of an anion or in the form of a compound?