My cat has been under the care of our vet for diarrhea and weight loss; her last tests showed a not quite normal pancreas and low B12. We are giving him B12 shots (he only had 2 so far and the vet said it will take months of shots to see a difference). He also said to put him on grain free (low carb )diet. I tried other dry and canned food, but he wouldn't eat it. We bought the Vital Complete Meals for cats last week at Petco and he loves it! His stools are normal and after only 4 days, he's putting weight back on! I know the B12 helps but it's the food that made the big difference! Thank you for your product!