Dogzymes Probiotic Max

I am not going to give this 5 stars because after all my research on a good pro-biotic I was drawn to this product. We have had ongoing "rear-end" problems with our 2 Dobermanns and from what I can tell, we pay a lot of money for the vets just to give them a syringe of pro-biotics to the mouth and then on a expensive food for a week. So we thought we'd save a few pounds and do it ourselves, but this didn't seem to work and we ended up having to go to the vets again anyway. Apart from that it smells really really nice, so the dogs have no hesitation to want to eat it. I am just not sure how much good it is actually doing.