There is one all-in-one supplement made just for homecookers called BalanceIT. It is a good supplement but does have menadione in it which I think is a bad thing. BalanceIT makes a few different kinds. I use it but the kind that fits Ellie's needs is BalanceIT K and that doesn't have menadione in it. BalanceIT K is not meant for healthy dogs.
So I'm not much help.