---
product_id: 13161156
title: "Hill's Prescription Diet y/d Thyroid Care Dry Cat Food, Veterinary Diet, 4 lb. Bag"
brand: "hill's prescription diet"
price: "873 kr"
currency: DKK
in_stock: true
reviews_count: 12
category: "Hill's Prescription Diet"
url: https://www.desertcart.dk/products/13161156-hills-prescription-diet-y-d-thyroid-care-dry-cat-food
store_origin: DK
region: Denmark
---

# Clinically proven thyroid hormone reduction in 3 weeks High L-carnitine for lean muscle maintenance Omega-3 & 6 fatty acids for heart & skin health Hill's Prescription Diet y/d Thyroid Care Dry Cat Food, Veterinary Diet, 4 lb. Bag

**Brand:** hill's prescription diet
**Price:** 873 kr
**Availability:** ✅ In Stock

## Summary

> 🐾 Take control of your cat’s thyroid health with science-backed nutrition!

## Quick Answers

- **What is this?** Hill's Prescription Diet y/d Thyroid Care Dry Cat Food, Veterinary Diet, 4 lb. Bag by hill's prescription diet
- **How much does it cost?** 873 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/13161156-hills-prescription-diet-y-d-thyroid-care-dry-cat-food)

## Best For

- hill's prescription diet enthusiasts

## Why This Product

- Trusted hill's prescription diet brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Radiant Skin & Coat:** Omega-6 fatty acids promote visible improvements in your cat’s skin and luxurious coat.
- • **Lean Muscle Maintenance:** Packed with L-carnitine to help your cat stay strong and active with healthy muscle mass.
- • **Vet-Recommended Confidence:** Trusted as the #1 US vet-recommended therapeutic cat food—partner with your vet for optimal care.
- • **Heart & Kidney Health Boost:** Balanced phosphorus and reduced sodium combined with omega-3 fatty acids support vital organ function.
- • **Clinically Proven Thyroid Support:** Only nutrition clinically shown to reduce thyroid hormone in just 3 weeks—exclusive feeding is key.

## Overview

Hill's Prescription Diet y/d Thyroid Care Dry Cat Food is a veterinarian-formulated, clinically proven diet designed to reduce overactive thyroid hormone production within 3 weeks. Featuring targeted nutrients like L-carnitine, omega-3 and omega-6 fatty acids, and controlled phosphorus and sodium levels, it supports lean muscle, heart, kidney, skin, and coat health. Recommended exclusively by vets, this 4 lb bag offers a trusted, long-term nutritional solution for adult cats managing thyroid conditions.

## Description

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. It’s made in the USA with global ingredients you can trust, and was developed by Hill’s nutritionists and veterinarians. This food is also formulated to promote a urinary environment that reduces the risk of developing struvite and calcium oxalate crystals. Please consult your veterinarian for further information on how Prescription Diet foods can help your cat continue to enjoy a happy and active life.

Review: Effective & the cat likes it - My cat has thyroid issues but can only tolerate a small dose of the medicine, because it causes severe itching in some cats. The Science Diet Thyroid food has been the magic fill in. I use it in combination with a small dose of the medicine and it works. I've gotten her the canned food & she will eat it off & on.
Review: Great product - What I need

## Features

- Hill's Prescription Diet y/d Thyroid Care Dry Cat Food is specially formulated by Hill’s nutritionists and veterinarians to manage your cat’s overactive thyroid
- The only clinically proven nutrition to decrease thyroid hormone production in 3 weeks when fed as the sole source of nutrition. For best results, consistent and exclusive long term feeding of this product is critical for efficacy of the product benefits.
- Controlled phosphorus and reduced sodium with omega-3 fatty acids from fish oil to support kidney and heart health
- High levels of L-carnitine to maintain lean muscle mass and supports a healthy body condition
- Omega-6 fatty acids for visible improvements in skin & coat health
- Hill’s Prescription Diet is the #1 US Vet Recommended therapeutic pet food — consult with your vet to make sure Prescription Diet y/d is the right food for your cat

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007M5WEYQ |
| ASIN  | B007M5WEYQ |
| Age Range Description | Adult |
| Best Sellers Rank | #17,953 in Pet Supplies ( See Top 100 in Pet Supplies ) #25 in Veterinary Diet Cat Food |
| Brand Name | HILL'S PRESCRIPTION DIET |
| Breed Recommendation | All Breed Sizes |
| Care Instructions | Keep away from Children, Keep in a Dry Place |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (427) |
| Date First Available | May 8, 2012 |
| Date First Available  | May 8, 2012 |
| Department | cat-veterinary-diets |
| Department  | cat-veterinary-diets |
| Directions | Please see package for complete feeding instructions. Adjust feeding amounts as necessary to maintain optimal weight. If you are unsure, ask your veterinarian. New to this food? Mix increasing amounts of your pet's new food with decreasing amounts of the old food over a 7 day period. Keep fresh water available at all times! Your pet's nutritional needs may change as they age. Ask your vet at every… |
| Included Components | adult-cat-food |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 7.47 x 5.56 x 10.25 inches |
| Item Package Dimensions L x W x H | 14.06 x 7.8 x 3.43 inches |
| Item Weight | 4 Pounds |
| Item model number | 1497 |
| Item model number  | 1497 |
| Manufacturer | Hill's Pet Nutrition |
| Manufacturer  | Hill's Pet Nutrition |
| Manufacturer recommended age  | 1 month and up |
| Model Name | Hill's® Prescription Diet® y/d® Original |
| Number of Items | 1 |
| Product Dimensions  | 7.47 x 5.56 x 10.25 inches; 4 Pounds |
| Size | 4 Pound (Pack of 1) |
| Specific Uses for Product | Thyroid |
| Target Audience Keyword | cat, cats, dogs, house-cats |
| Warranty Description | 100% statisfaction, or your money back |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** HILL'S PRESCRIPTION DIET
- **Flavor:** Chicken
- **Item Form:** Dry Food
- **Specific Uses For Product:** Thyroid

## Images

![Hill's Prescription Diet y/d Thyroid Care Dry Cat Food, Veterinary Diet, 4 lb. Bag - Image 1](https://m.media-amazon.com/images/I/71bOGTlquAL.jpg)

## Questions & Answers

**Q: What is science-led nutrition?**
A: Nutrition inspired by science — not trends — creates differences you can see, feel and trust. Our food scientists understand the combinations of nutrients and ingredients to help support lifelong health.

**Q: How much should I feed my pet?**
A: Most Prescription Diet foods have a feeding guide on the package to help you determine the proper amount for your pet. It's critical to your pet's health that their physical condition be monitored regularly and the feeding amount adjusted as needed.

**Q: How can I tell if an unopened can or bag of cat or dog food is still good?**
A: The datecode on our plastic bags is located on the left gusset, near the 4 or 5-digit SKU number, toward the bottom of the bag. The datecode on our medium and large bags will be located on the top of the bag, generally the front flap.

**Q: How should I store my cat or dog’s dry food?**
A: Bags of dry Science Diet, Healthy Advantage and Prescription Diet cat or dog food should be stored in a cool, dry environment under 100°F (38°C).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Effective & the cat likes it
*by A***J on December 31, 2025*

My cat has thyroid issues but can only tolerate a small dose of the medicine, because it causes severe itching in some cats. The Science Diet Thyroid food has been the magic fill in. I use it in combination with a small dose of the medicine and it works. I've gotten her the canned food & she will eat it off & on.

### ⭐⭐⭐⭐⭐ Great product
*by J***I on August 19, 2025*

What I need

### ⭐⭐⭐⭐⭐ Seems to be helping my best buddy at 18, now 19, so worth every penny for that!!
*by L***. on July 27, 2017*

My dearest 18 year old Siamese seems to be doing better with this food. I will do anything to keep him around, cause super smart and cool cats are hard to come by! yep, I even feed him lobsta meat on occasion. I love the looks I get at the fish market when Walter asks me if I want some tail meat for my cats, lol. hey, he has had to live with me all his life, so he deserves the best. I am glad to see him improving, and pray it continues. it is expensive, but how do you put a price on your best friend and loyal companion? I bought him a Siamese twin brother, but I got the type of Siamese that is unstable with that one. UPDATE: He is now 19 :) I just wonder if I can get this to him with 2 new kittens? He does give me the "WTF" stare when those 2 come prancing around, even after 4 months of us all in one house. Can kittens eat this stuff? Now that I have 4 cats, very hard to control who gets what since I free feed with dry food. And yes, litter duty is quite busy. The kittens love to watch me clean the boxes, why can't they learn to help? All that energy needs to be directed to a positive purpose! Other than basically tearing house apart!! 2 kittens together are amazing best freinds, but they play very hard, drop, and wake up to play harder later. Once the bedroom door closes, I swear I hear them say "party time"!

## Frequently Bought Together

- Hill's Prescription Diet y/d Thyroid Care Dry Cat Food, Veterinary Diet, 4 lb. Bag
- Hill's Prescription Diet y/d Thyroid Care with Chicken Wet Cat Food, Veterinary Diet, 5.5 oz. Cans, 24-Pack

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-25*