Roll over image to zoom in
Hill's Prescription Diet
y/d Original Dry Cat Food
AVAILABLE SIZES
4lb, 8.5lb
Support for your cat's overactive thyroid
NEED
/PREFERENCE
Thyroid Care
FLAVOR
Original
FOOD FORM
Dry Food
LIFESTAGE
Adult, Senior
#1 VETERINARIAN
RECOMMENDED
100% SATISFACTION GUARANTEE
At Hill’s, we’re dedicated to making foods your dog will love. If you’re not satisfied for any reason with a product purchased from one of our authorized sellers, simply return the unused portion to the place of purchase for your money back or a replacement product. Additional terms may apply. Please click here for full details.
Hill's Prescription Diet y/d Dry Cat Food is an easy and convenient way to manage a cat's overactive thyroid and the only clinically proven nutrition to decrease thyroid hormone production in 3 weeks when fed as the sole source of nutrition. Ideal for long-term feeding. Dry and canned formulas can be mixed or fed concurrently.
How it helps:
- Decreases thyroid hormone (T4) production in 3 weeks
- Supports kidney, heart & urinary health
- Visible improvement in skin & coat
- Helps maintain lean muscle mass
- S+OXSHIELD: Formulated to promote a urinary environment that reduces the risk of developing struvite & calcium oxalate crystals
How it works:
- Limited iodine
- Controlled phosphorus and low sodium and enriched with omega-3 fatty acids
- Omega-6 fatty acids to promote a healthy skin & coat
- High levels of L-carnitine to support a healthy body condition
Additional info:
Please consult your veterinarian for further information on how our Prescription Diet foods can help your cat to continue to enjoy a happy and active life.
Proud to have helped
11 million shelter pets
find a forever home & counting
INGREDIENTS: Corn Gluten Meal, Pork Fat, Whole Grain Corn, Soybean Mill Run, Egg Product, Chicken Liver Flavor, L-Lysine, Potassium Citrate, Lactic Acid, Dicalcium Phosphate, Fish Oil, Choline Chloride, Calcium Carbonate, Calcium Sulfate, DL-Methionine, Taurine, L-Tryptophan, Brewers Dried Yeast, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Calcium Pantothenate, Vitamin A Supplement, Riboflavin Supplement, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Biotin, Vitamin D3 Supplement), minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganese Sulfate), L-Carnitine, Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene
IMPORTANT: Because iodine intake from other food sources -- treats, other pets food, flavored medicines, etc. -- can compromise the effectiveness of low-iodine nutrition, it is critical that you follow your veterinarian's feeding instructions carefully and feed only Prescription Diet y/d.
Ask your veterinarian for specific feeding instructions for your pet. Daily Feeding Recommendations are only a guide and a place to start. Grams are the most accurate form of measurement; cups are estimated from grams.
For best results:
– Gradually transition to this new food for 7 days or more.
– Exclusively feed the recommended Prescription Diet dry and wet foods.
– Keep fresh water available at all times.
– Have your veterinarian monitor your pet's condition.
– To prevent suffocation, keep the packaging out of the reach of pets & children.
Adult maintenance
| Weight of Cat | Amount per Day |
| 6 lb (2,7 kg) | 1/3 cup (40 g) |
| 8 lb (3,6 kg) | 3/8 cup (45 g) |
| 10 lb (4,5 kg) | 1/2 cup (65 g) |
| 12 lb (5,4 kg) | 5/8 cup (80 g) |
| 14 lb (6,4 kg) | 2/3 cup (85 g) |
| 16 lb (7,3 kg) | 3/4 cup (95 g) |
| 18 lb (8,2 kg) | 3/4 cup (95 g) |
Animal feeding tests using AAFCO procedures substantiate that Hill's® Prescription Diet® y/d™ Feline Thyroid Health provides complete and balanced nutrition for maintenance of adult cats
Days 1-2
Days 3-4
Days 5-6
Day 7
Days 1-2
Days 3-4
Days 5-6
Day 7
Days 1-2
Days 3-4
Days 5-6
Day 7
4147 kcal/kg (517 kcal/cup†)
| Nutrient | Dry Matter1 % |
| Protein | 36.3 % |
| Fat | 25.8 % |
| Carbohydrate / NFE | 28.5 % |
| Crude Fiber | 3.1 % |
| Calcium | 0.94 % |
| Phosphorus | 0.65 % |
| Potassium | 0.83 % |
| Sodium | 0.25 % |
| Magnesium | 0.066 % |
| Iodine | 0.2 ppm |
| Taurine | 0.34 % |
| Carnitine | 650.6 ppm |
References
1The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles with differing moisture contents.
†An eight fluid oz. measuring cup of y/d Original Dry Cat Food contains 4.4 oz. by weight.
Ask your veterinarian for alternatives. For help transitioning to a new pet food, visit HillsPet.com/TransitionTips.
Related products
Prescription Diet®
Groundbreaking nutrition that can save the lives of sick pets and comfort the people who care for them.
