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

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In stock
  • 4-lb bag
  • 8.5-lb bag


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

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 nutrition to restore thyroid health
  • Improves thyroid health in 3 weeks* (when fed as the sole source of nutrition)
  • Complete daily nutrition with a taste your cat will love
  • Supports kidney health with controlled phosphorus and low sodium
  • Helps maintain bladder health with controlled mineral levels
  • Promotes heart health with essential nutrients like taurine and carnitine
  • Promotes healthy skin and a luxurious hair coat with high levels of omega-3 and -6 fatty acids

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

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Customer Reviews

Rated 4.6 out of 5 by 184 reviewers.
Rated 4 out of 5 by Good service Good service and help with getting in contact with the vet for perscription for special diet food. July 14, 2016
Rated 5 out of 5 by Gets the job done! I recently adopted a cat from a shelter and told she was in perfect health. A week later, there was blood on her urine. I took her to the vet immediately. The doctor drew a blood sample and shocked me the next day with the results. My cat had an Overactive Thyroid which can cause heart and kidney problems and, could be fatal if not properly handled. Hill's Prescription Diet y/d Thyroid Care Original Dry Cat Food did the job. She is now a healthy, happy cat and there is no way I could be more pleased. And thanks to Chewy, I got my first autoship order at a 20% discounted rate AND used a coupon. My heart is again full of joy because of this prescribed diet and the kindness in which the Chewy employees showed me as I was in tears on the phone with them at the time. July 8, 2016
Rated 5 out of 5 by Great I have been feeding my cat who has hyperthyroidism the wet food but had to go out of town so i bought a bag of the y/d thyroid care dry food for his self feeder. Without gradually switching foods he immediately ate dry food and loved it. It's very moist which he loved but just make sure you reseal well. I will be keeping this on hand for when I have to put out his self feeder. July 19, 2016
Rated 5 out of 5 by Controlling thyroid The diet is working perfectly at controlling my cats thyroid. He loves the food. July 9, 2016
Rated 5 out of 5 by Great service and delivery The product we ordered arrived promptly and in good condition. June 21, 2016
Rated 4 out of 5 by Hoping for great results My almost senior cat was diagnosed with hyperthyroid. After medicating our last cat with methimazole, both pill and gel form, we strongly wanted to try something different. Our vet recommended trying Y/D, and so far, I'm seeing some improvement, especially in weight gain and shinier coat, but also in seeming a little calmer. The real test will be in a couple of weeks when his thyroid hormones are rechecked. Our cat likes and eats the dry food quite well so far. June 9, 2016
Rated 3 out of 5 by Seems to work My cat is hyperthyroid. She was on medication, but she was experiencing side effects, so the vet switched her to the y/d diet instead of the k/d diet she was on with the medication(she also has kidney disease). This has been effective so far in keeping the symptoms of hyperthyroidism down, and on the next check up I will find out if it is keeping her T4 levels low enough. I don't think it is the healthiest food for her, her coat is not as shiny as it used to be, but given very limited options for a diet, and not having enough knowledge to make a diet for her myself, I'm glad I at least have this option for her. It is very smelly and has dyed my measuring cup yellow, but Roxy eats it. May 13, 2016
Rated 4 out of 5 by My cat likes this:)) Chewy was very helpful in contacting my vet for approval of this food. I'm happy to report that my cat easily transitioned to this food. Time will tell if it helps to fix his over-active thyroid. June 1, 2016
  • 2016-07-22 T11:27:06.419-05:00
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