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

£13.79 – £35.69 From £7.14 per kg
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  1. 1.5kg
  2. 5kg
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This is a specialist veterinary product. We will ask you a simple set of questions to confirm that you are buying the correct medicine for your pet and know how to use it safely

Warning: By law we cannot sell this product to anyone under 18, by placing an order with us you are confirming that you are over the age of 18.

Order by 3pm for Express Courier Delivery  Some of the items we sell are a bit too bulky to fit on our delivery vans so we offer our customers Next Day Delivery via courier. Deliveries are made from 8am - 8pm Monday to Saturday and 9am - 5pm on Sundays. Your delivery slot will only be confirmed once your order has been placed.

100% Guaranteed for quality, consistency and taste or your money back.

Hill's Prescription Diet y/d Thyroid Care Original is a scientific breakthrough - a clinically proven pet food to help support your cat's thyroid health! The thyroid gland produces hormones that have an impact on a variety of metabolic functions from appetite regulation to heart rate; gut function to behavioural characteristics. A cat with a healthy thyroid has a body that is kept in balance, with the end result that your cat feels great.

Key Benefits

Vital Organs: Controlled levels of sodium and phosphorus to support healthy vital organ function, particularly kidneys
Dental: Unique kibble technology that provides a clinically proven cleaning action
Digestion: Highly digestible proteins and a balance of fibres to support a healthy digestive tract
Weight: Appropriate levels of protein and fat to help maintain ideal weight
Vitality: Precise balance of minerals and omega-3 fatty acids for healthy bones and joints

Recommended for

Adult cats suffering with problems related to thyroid health


Original: Maize gluten meal, maize, animal fat, pea protein, brewers' rice, wheat, dried whole egg, minerals, digest, flaxseed, fish oil, L-carnitine, vitamins, taurine, trace elements and beta-carotene. With a natural antioxidant (mixed tocopherols).


Beta-carotene 1.5 mg/kg, Calcium 0.79%, Carbohydrate (NFE) 31.8%, Fat 23.6%, Fibre (crude) 1.1%, L-Carnitine 505 mg/kg, Magnesium 0.07%, Moisture 5.5%, Omega-3 fatty acids 1.02%, Omega-6 fatty acids 4.48%, Phosphorus 0.57%, Potassium 0.86%, Protein 32.2%, Sodium 0.25%, Vitamin A10 13175 IU/kg, Vitamin C10 110 mg/kg, Vitamin D10 1357 IU/kg, Vitamin E10 610 mg/kg


The Feeding Guide below contains guidelines only; adjust values to maintain optimal body weight. Consult your vet if unsure. Fresh drinking water should be available to your pet at all times. When introducing Hill's Prescription Diet to your cat for the first time, introduce gradually over 7 days: 

Day 1-2: 75% old food, 25% new food 
Day 3-4: 50% old food, 50% new food 
Day 5 -6: 25% old food, 75% new food 
Day 7: 100% new food

Feeding Guide

Cat Body
Dry Grams
Dry Grams
+ 156g Cans
2kg 30-40 g 10g + 1/2
3kg 40-50 g 25g + 1/2
4kg 45-65 g 10g + 1
5kg 55-75 g 20g + 1
7+ kg 11g per kg 6g per kg + 1

Safety Advice

By purchasing this product, you confirm that your pet has been examined by a vet who recommended this diet on the basis of their diagnosis. You confirm that you understand that whilst your pet is being fed this diet, it is recommended that you seek veterinary advice at least every 6 months regarding its usage. You also confirm that you understand that you need to seek veterinary advice if your pet's condition deteriorates in any way whilst feeding this diet.