Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy (Adult, Dry)
Share
Ingredients (verbatim, per manufacturer product page): Corn Starch, Hydrolyzed Soy Protein, Powdered Cellulose, Dicalcium Phosphate, Soybean Oil, Hydrolyzed Chicken Flavor, Ground Pecan Shells, Coconut Oil, Lactic Acid, Potassium Chloride, Flaxseed, Glyceryl Monostearate, Dried Beet Pulp, Dried Citrus Pulp, DL-Methionine, Fish Oil, Choline Chloride, Calcium Sulfate, Pressed Cranberries, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate, Niacin Supplement, Thiamine Mononitrate, Pyridoxine Hydrochloride, Calcium Pantothenate, Riboflavin Supplement, Vitamin A Supplement, Biotin, Vitamin B12 Supplement, Folic Acid, Vitamin D3 Supplement), Calcium Carbonate, Iodized Salt, Taurine, Magnesium Oxide, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), L-Tryptophan, Mixed Tocopherols for freshness, Natural Flavors, L-Carnitine, Beta-Carotene.
Guaranteed analysis (dry-matter basis, per manufacturer): Crude Protein 27.0%, Crude Fat 7.4%, Crude Fiber 4.5%. Hill's publishes this recipe's nutrient content on a dry-matter basis rather than an as-fed guaranteed-analysis panel, and moisture is not separately published, so it is left blank here rather than estimated. Energy 3198 kcal/kg calculated metabolizable energy (317 kcal/cup). AAFCO: Animal feeding tests using AAFCO procedures substantiate that Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy Recipe Dog Food provides complete and balanced nutrition for maintenance of adult dogs. Corn Starch is the first ingredient.
Hill's sells z/d Low Fat Hydrolyzed Soy as part of its Prescription Diet line, a therapeutic tier available through veterinarians rather than on the open shelf. Hill's describes it as "a complete and balanced food formulated for a dog's low fat and food sensitivity needs." It is a dry kibble formulated for adult dogs, and the first five ingredients on the label are Corn Starch, Hydrolyzed Soy Protein, Powdered Cellulose, Dicalcium Phosphate, and Soybean Oil. Hill's lists ingredients by pre-cooking weight, so the order shows what goes into the recipe before processing, not the finished proportions. It comes in 25 lb, 17.6 lb, 8 lb. Hill's product page states: "Ask your veterinarian for specific feeding instructions for your pet. Please consult your veterinarian for further information on how our Prescription Diet foods can help your dog." Sniff and Shift makes single ingredient freeze dried treats, which are treats rather than meals, and they pair with any complete diet on this list. Ask your veterinarian before feeding any therapeutic diet.
Consolidated from publicly available manufacturer information (link above), compiled Sep 20, 2026. Not tested or evaluated by Sniff and Shift. Not medical advice, verify on current packaging and consult your veterinarian.
Questions about Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy
What are the first ingredients in Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy?
As listed on Hill's Prescription Diet's product page, the first ingredients are Corn Starch, Hydrolyzed Soy Protein, Powdered Cellulose, Dicalcium Phosphate, Soybean Oil. The full list is on the spec sheet above.
How much protein and fat does Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy have?
Hill's Prescription Diet publishes crude protein 27.0% (dry-matter basis) and crude fat 7.4% (dry-matter basis), with 3198 kcal/kg (317 kcal/cup). These are the maker's published figures, not our measurements.
Does Hill's Prescription Diet publish an AAFCO statement for Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy?
Hill's Prescription Diet states: Animal feeding tests using AAFCO procedures substantiate that Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy Recipe Dog Food provides complete and balanced nutrition for maintenance of adult dogs. (per manufacturer)
What kind of food is Hill's Prescription Diet z/d Low Fat Hydrolyzed Soy?
Hill's Prescription Diet lists it as dry kibble, adult dog food.
Where do these numbers come from?
Every figure on this page is transcribed from Hill's Prescription Diet's own product page, linked in the Source line above. Check the bag for the current label.
Source: Hill's Prescription Diet product page (hillspet.com). Figures are the maker's published values; check the bag for the current label.
Want to see how it stacks up? Use the compare it against another food to put any two foods next to each other.
