Re: brewers yeast
Hi, Julie!
I've heard elewhere that a sprinkle of brewer's yeast can work. I do know it is in an ingredient in Willie's supplement that I add to his food, and it hasn't seemed to affect his numbers (though, it is a very small amount as the total serving for the supplement is 1 tsp per 1 cup of food).
FYI, the reason folks suggest fortiflora is that it includes the flavoring that pet food companies use on dry kibble (fortiflora is actually a purina product). I know Willie would eat anything with it on there... it is like kitty crack!!