Our German Shepherd has gastrointestinal issues after a very wonderful rescue group saved him by the grace of good people. We rescued Sam from them but he came to us with some severe gastro and digestive issues. We put him on Probios. Finally after a couple of weeks on this product, he can eat normally and not have a stomach upset. He's gaining weight and his digestive system is finally working normally again. He had such a diffucult time and he now is truly living a normal life and eating well. Thank you Probios for giving our dog a new leash on life.