Have any of you sprinkled brewer's yeast powder on your dogs' food? I buy it from GNC for our family's use (so good on popcorn...yum!!) and the guy there told me that lots of people buy it for their dogs to help w/digestion (?). I know it's good for people, so you would thing it would be benificial for dogs too.....but I was wondering if anyone had tried it and found it made their dogs gassy or anything? Our bullmastiff has that problem in general, and lord knows I def. don't want to do anything to make it worse!!