---
product_id: 13161156
title: "Hill's Prescription Diet y/d Thyroid Care Dry Cat Food, Chicken, 4 lb. Bag"
brand: "hill's prescription diet"
price: "₩167572"
currency: KRW
in_stock: true
reviews_count: 12
category: "Hill's Prescription Diet"
url: https://www.desertcart.kr/products/13161156-hills-prescription-diet-y-d-thyroid-care-dry-cat-food
store_origin: KR
region: South Korea
---

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

**Brand:** hill's prescription diet
**Price:** ₩167572
**Availability:** ✅ In Stock

## Summary

> 🐾 Transform your cat’s thyroid health with the only vet-approved formula that works fast!

## Quick Answers

- **What is this?** Hill's Prescription Diet y/d Thyroid Care Dry Cat Food, Chicken, 4 lb. Bag by hill's prescription diet
- **How much does it cost?** ₩167572 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/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

- • **Skin & Coat Glow-Up:** Omega-6 fatty acids promote visible improvements in your cat’s skin and fur health.
- • **Vet-Recommended & Trusted:** #1 US Vet Recommended therapeutic diet—trusted by professionals for your cat’s well-being.
- • **Heart & Kidney Health Formula:** Controlled phosphorus and reduced sodium with omega-3 fatty acids to support vital organs.
- • **Clinically Proven Thyroid Support:** Only nutrition clinically shown to reduce thyroid hormone in just 3 weeks—exclusive long-term feeding is key.
- • **Lean Muscle & Body Condition Boost:** Packed with L-carnitine to help your cat maintain a strong, healthy physique.

## Overview

Hill's Prescription Diet y/d Thyroid Care Dry Cat Food is a veterinary-formulated, clinically proven diet designed to reduce overactive thyroid hormone production within 3 weeks. Featuring a balanced blend of L-carnitine, omega-3 and omega-6 fatty acids, and controlled minerals, it supports lean muscle, heart, kidney, and skin health. Recommended exclusively by vets, this 4 lb. bag offers a trusted nutritional solution for managing feline hyperthyroidism and promoting overall vitality.

## 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: Actually works to control hyperthyroidism - So my 5 stars is not for the quality of this cat food. Necessarily. Let me explain. If you read the ingredients the food is basically hard nuggets of corn with synthetic vitamins. Would not have touched my precious fur monster's lips before she got sick with hyperthyroidism. We always tried to feed her with the highest quality cat food we could find, all natural, high protein, etc. She got sick anyway. Initially, we were able to get her hyperthyroidism under control with methimazole. And then only a month or so after victorious vet visit where her T levels were normal, she started getting sores on her face and in her ears from the methimazole. Due to the separation period involved with radioactive iodine treatment, we decided to try the food. I was very reticent but after reading through reviews on desertcart (thank you reviewers) I began to think it could work. And it has so far. Our 13yo old cat is back to her normal spoiled self! Her fur is even shiny and she seems to enjoy her hard little corn pellets. We also feed her the canned Y/D but she seems to prefer the kibble overall.

## 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 | #18,672 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 (429) |
| 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 | 13.94 x 8.19 x 3.54 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, Chicken, 4 lb. Bag - Image 1](https://m.media-amazon.com/images/I/71bOGTlquAL.jpg)

## Available Options

This product comes in different **Size, Flavor** options.

## 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.

### ⭐⭐⭐⭐⭐ Actually works to control hyperthyroidism
*by B***H on October 5, 2024*

So my 5 stars is not for the quality of this cat food. Necessarily. Let me explain. If you read the ingredients the food is basically hard nuggets of corn with synthetic vitamins. Would not have touched my precious fur monster's lips before she got sick with hyperthyroidism. We always tried to feed her with the highest quality cat food we could find, all natural, high protein, etc. She got sick anyway. Initially, we were able to get her hyperthyroidism under control with methimazole. And then only a month or so after victorious vet visit where her T levels were normal, she started getting sores on her face and in her ears from the methimazole. Due to the separation period involved with radioactive iodine treatment, we decided to try the food. I was very reticent but after reading through reviews on Amazon (thank you reviewers) I began to think it could work. And it has so far. Our 13yo old cat is back to her normal spoiled self! Her fur is even shiny and she seems to enjoy her hard little corn pellets. We also feed her the canned Y/D but she seems to prefer the kibble overall.

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

What I need

## 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 South Korea*
*Store origin: KR*
*Last updated: 2026-03-15*