I would definitely email the company and ask them about the vitamin k, which form it is. If it's vitamin K3, stay away from it. It is also called Menadione. It's a synthetic form of vitamin K. After Hazel told me, I of course had to go online and research it a bit
As far as being chelated, that would actually be a good thing. It's for all vitamins and minerals. If the minerals are "chelated", they are more easily absorbed by the body, and much more beneficial (unless it's vitamin K3, then you don't want it absorbed!