Hill's Prescription Diet y/d Thyroid Care Original Dry Cat Food

  • List Price:


  • Price:

    $53.49 FREE 1-2 Day Shipping on this item

  • You Save:

    $10.70 (17%)

In stock
8.5-lb bag
  • 4-lb bag
  • 8.5-lb bag
- Quantity +


Hill's Prescription Diet y/d Thyroid Care is the safe, effective and easy way to manage thyroid health. Clinically proven nutrition to restore thyroid health in 3 weeks.

Key Benefits

  • Clinically proven to improve thyroid health in 3 weeks when fed as the sole source of nutrition
  • Decreases T4 hormone production while supporting kidney, heart and urinary health
  • Helps support a healthy body condition and a healthy immune system while also promoting a visible improvement in skin and coat
  • This recipe has limited iodine and controlled phosphorus and low sodium
  • Promotes desirable urine pH levels and is high in taurine, L-carnitine and omega 3 fatty acids

Special Note

Hill's Prescription Diets require a veterinary prescription. This product will not be shipped until a copy of a valid prescription authorization is faxed to 1-800-619-7973 or e-mailed to rx@chewy.com.

See all items by Hill's Prescription Diet

  • Item Number
  • Weight
    8.5 pounds
  • Brand
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Prescription Food

Nutritional Info


  1. Corn Gluten Meal, Pork Fat, Whole Grain Corn, Soybean Mill Run, Dried Egg Product, L-Lysine, Chicken Liver Flavor, Potassium Citrate, Lactic Acid, Dicalcium Phosphate, Vitamins (L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), Vitamin E Supplement, Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Riboflavin Supplement, Biotin, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Fish Oil, Choline Chloride, Calcium Carbonate, Calcium Sulfate, Dl-Methionine, Taurine, Vitamin E Supplement, L-Tryptophan, Natural Flavor, Minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Sulfate), L-Carnitine, Mixed Tocopherols for Freshness, Phosphoric Acid, Beta-Carotene, Natural Flavors.

Caloric Content

  1. 517 kcal/cup
Guaranteed Analysis
Crude Protein 30.0% min
Crude Fat 20.0% min
Crude Fiber 3.5% max
Phosphorus 0.45% min
Phosphorus 0.85% max
Sodium 0.3% max
Iodine 0.2% max
Taurine 0.15% min
Carnitine 200 ppm min

Feeding Instructions

Because iodine intake from other food sources -- treats, another cats food, etc. -- can compromise the effectiveness of low-iodine nutrition, its critical that you follow your veterinarians feeding instructions carefully and feed only y/d.Adjust feeding amounts as necessary to maintain optimal weight. If you are unsure, ask your veterinarian. For best results & safety practices: Gradually transition to your pets new food over a 7 day period. Exclusively feed the recommended Prescription Diet dry and/or canned food. Keep fresh water available at all times. Have your veterinarian monitor your pets condition.

Transition Instructions

A gradual transition to a new pet food is important to avoid digestive upset. To transition, mix your pet’s current food with the new food. Over 7 days, gradually decrease the amount of the current pet food while increasing the amount of new pet food. In some cases, your veterinarian may recommend no transition or a shorter transition time.

Pet lovers also bought...

Customer Reviews

Rated 4.7 out of 5 by 91 reviewers.
Rated 5 out of 5 by This product works This product has been a life saver for my cat who has a thyroid problem. January 17, 2017
Rated 5 out of 5 by Ms KItty thrives on it, prefers the dry to the canned. Loved the fact that my order was delivered so promptly. January 4, 2017
Rated 5 out of 5 by It seems to work I was pretty skeptical that food alone could improve our cat's hyperthyroidism but it seems to work. It smells awful and is way too expensive but beats the alternative. January 2, 2017
Rated 5 out of 5 by excellent way to treat cat's thyroid problem Excellent product. I mix it with a little water to soften it up and make gravy. Tiger loves to eat it this way and it has helped his fur grow back and made him playful again. December 23, 2016
Rated 5 out of 5 by Hill's Perscription products are expensive but my cat's health is worth it! My cat was diagnosed with thyroid disease years ago. My vet prescribed Hill's y/d and her condition has been under control ever since. Agnes also loves the taste. I definitely recommend Hill's. December 31, 2016
Rated 5 out of 5 by Very Pleased I'll never buy cat food any other way again! Great experience with Chewy and the food was deliver within just a few days. December 29, 2016
Rated 5 out of 5 by Prescribed food for cat This food was prescribed for my 14 year old cat who was diagnosed with thyroid problems. It works great for her, she does not need additional medication, and she likes the food. Chewy always provides good pricing and fast service. December 22, 2016
Rated 5 out of 5 by Works better than the actual thyroid medicine (for my cat) As crazy as this sounds.... I started out giving the medicine to my cat for his thyroid condition and refused to try the food. My vet did offer to use the food..first... I said..yea right...I can't imagine that would work. So I started with the medicine. Well it wasn't working...the cat would not gain his weight back. So I finally caved in...bought the food...and he started gaining his weight back...his hair is back to normal...quite amazing. One drawback... more expensive than the medicine....but it definitely works.. December 1, 2016
  • 2017-01-19 T07:18:10.574-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_91, tr_91
  • loc_en_US, sid_69665, prod, sort_default
2 3 4 next>>