Thank you for your question. The protein in our Hill's® Science Diet® Sensitive Stomach & Skin dry dog food has 25% on a dry matter basis. If your pet has a specific medical condition requiring a particular nutrient level, we recommend speaking with your veterinarian regarding a food recommendation. Hill's Pet Nutrition

Thank you for your question. These two products will have the same formulation. However, the kibble sizes will be different. Hill's Pet Nutrition

Thank you for your inquiry. To maintain our leadership in nutritional health care for companion animals, Hill’s periodically makes changes to product formulas to incorporate additional health or product design benefits. We made some changes to this formula starting November 2021. Below we have included the list of ingredients in the new formulation. Chicken, Chicken Meal, Yellow Peas, Cracked Pearled Barley, Brown Rice, Brewers Rice, Whole Grain Sorghum, Egg Product, Chicken Fat, Soybean Oil, Dried Beet Pulp, Chicken Liver Flavor, Lactic Acid, Flaxseed, Pork Liver Flavor, Potassium Chloride, IodizedSalt, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Choline Chloride, Taurine, Mixed Tocopherols for freshness, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Natural Flavors, Beta-Carotene. For helpful tips on how to transition your pup to the new formula, please visit https://www.hillspet.com/dog-care/nutrition-feeding/how-to-transition-my-dogs-food. We hope this is helpful! Hill's Pet Nutrition

I am not sure.  It should state on the package.  You can also reach out to Hill’s or your vet.  My vet recommended this particular blend because my dog has severe skin allergies.

Thank you for your inquiry. Our Hill's Science Diet Adult Sensitive Stomach & Skin Chicken Recipe Dry Dog Food contains 0.28% sodium on a dry matter basis. Hill's Pet Nutrition

Thank you for your question. In March 2020, the kibble was changed to a disc shape. We also modified the level of Vitamin E (an antioxidant) in order to better align with Hill's clinical nutrition standard that is based on many studies of antioxidants in pets. Hill's Pet Nutrition

Thank you for your question. Prescription Diet® brand pet foods are formulated to address specific medical conditions that can develop in pets. Science Diet® brand pet foods are formulated to meet the needs of healthy pets during various life stages. We do not make Science Diet products that serve as substitutions for Prescription Diet products. Hill's Pet Nutrition

Not really, we finally had to pull our yellow lab off and went to a medicated food from the vet.

We are disappointed to hear of your experience. Please know we have a team of veterinarians and pet nutritionist who work very hard at making sure our pet foods are nutritionally balanced, fresh and safe to feed to pets everywhere. We would like to get more information about this. When you get a moment, please give us a call at 1-800-445-5777 (M-F 8-5 CST) and share reference number 003345500A with the representative your speak with. Hill's Pet Nutrition

Find a dog food with zero corn or corn oil.