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Hill's Prescription Diet

y/d Cat Food





Complete dietetic pet food for reduction of iodine levels in feed in case of hyperthyroidism in adult cats. This food contains a restricted level of iodine.

To support your cat's thyroid health


Thyroid Care


with Chicken


Adult, Senior



Satisfaction guarantee

For quality, consistency and taste, or your money back

Hill's Prescription Diet y/d Wet Cat Food is an easy and convenient way to reduce the iodine levels in food for cats with hyperthyroidism. For best results, consistent long term feeding of this product is critical for efficacy of the product benefits. Dry and canned formulas can be mixed or fed concurrently.

How it works:

  • Limited iodine
  • Reduced phosphorus and sodium with omega-3 fatty acids from fish oil
  • High levels of L-carnitine

How it helps:

  • Supports thyroid health
  • Supports kidney and heart health
  • Helps maintain lean muscle mass
  • S+OXSHIELD: Formulated to promote a urinary environment that reduces the risk of developing struvite & calcium oxalate crystals

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.

Formulated to help

reduce the risk of struvite & calcium oxalate crystals

Made in the USA
with global ingredients you can trust

Proud to have helped
13 million shelter pets
find a forever home & counting


COMPOSITION: Meat and animal derivatives (chicken 7%), cereals, oils and fats, derivatives of vegetable origin, minerals.


ANALYTICAL CONSTITUENTS: Protein 9.0%, Fat content 7.4%, Crude fibre 0.84%, Crude ash 1.4%, Moisture 72.8%, Calcium 0.22%, Phosphorus 0.14%, Sodium 0.07%, Potassium 0.22%, Magnesium 0.01%; per kg: Vitamin A 36,963IU, Vitamin D3 403IU, Total Iodine 0.04mg.


ADDITIVES PER KG: Nutritional additives: 3b103 (Iron) 22.5mg, 3b405 (Copper) 2.2mg, 3b503 (Manganese) 2.3mg, 3b603 (Zinc) 38.9mg, coloured with natural caramel.

Adult maintenance Mixed Feeding Guide

Weight of Cat - kgs Amount per Day - 156 g cans Amount per Day - grams
2 0.5 + 10 g
3 0.5 + 25 g
4 1 + 10 g
5 1 + 20 g
6 1 + 30 g
7+ 1 + 7 g per kg

Adult maintenance

Weight of Cat - kgs Amount per Day - 5.5 oz (156 g) cans
2 3/4
3 1
4 1 1/4
5 1 1/2
6 1 2/3
7+ 40 g per kg

IMPORTANT: Because iodine intake from other food sources – treats, another pets food, flavoured 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.



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

1241 kcal/kg

Nutrient As Fed1
Moisture 73 %
Protein 9 %
Fat 7.4 %
Carbohydrate (NFE) 8.5 %
Crude fibre 0.8 %
Crude Ash 1.4 %
Calcium 0.22 %
Phospohorus 0.14 %
Potassium 0.22 %
Sodium 0.07 %
Magnesium 0.015 %
Taurine 0.07 %
Vitamin A 36948 IU/kg
Vitamin C 48 ppm
Vitamin D 359 IU/kg
Vitamin E 215 IU/kg
Omega-3-fatty acids 0.17 %
Omega-6-fatty acids 1.51 %
Beta-carotene 0.62 ppm


1The displayed analytical values may differ slightly from the values shown on the package. Both values meet product specifications.



Prescription Diet

Groundbreaking nutrition that can save the lives of sick pets and comfort the people who care for them.

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