"Mafia Princess," don't be so judgemental. I asked my vet for nutrition advice, it wasn't unsolicited as it can be in the stores, and he doesn't carry "random" food products, where are you getting these ideas? And could you possibly be any more sarcastic?
Info on Brewer's Yeast:
"Prin," check out these links to know more about Brewer's. Perhaps you have some links to info that explains it's a bad thing? I'd be interested.
I haven't yet "sworn off" holistic foods, but I believe it's wise to be skeptical of some of these things.
Do you people work in pet food stores?