Yeah, just 2 weeks ago me and mine were at the vets for it seems like ever recurring diarrhea. So we're on new (not tried before) antibiotics, and the vet prescribed probiotics. So I got home and curious me looks this specific product up online, and much to my amazement, it says this product can prevent diarrhea! By keeping the gut infused with a supply of 'good' bacteria, the 'bad' bacteria cannot get a good hold on the system and goes away with the poop. So far doggies have not had 1 bout of diarrhea... and I put all of them on it! For life!