So, my dog was a rescue, and he has had diarrhea since weve had him. Eventually after lots of tests (and money) he was diagnosed with a simple case of IBS... we tried food after food, and eventually Nutro was the only thing that didn't hurt my sweet boys stomach. He has done so well on it, and it is well worth the price! ($55 a bag here in texas). Highly recommend if your pup suffers from a sensitive stomach or allergies!