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y/d® Feline Thyroid Health - Canned

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Hill's® Prescription Diet®
y/d® Feline Thyroid Health

Prescription Diet y/d is the safe, effective and easy way to manage thyroid health. Clinically proven nutrition to restore thyroid health in 3 weeks.

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100% Guarantee We're confident your pet will enjoy Hill's® Prescription Diet® foods. We're so confident that we offer a 100% money-back guarantee.*

Prescription Diet Foods are made in our own U.S. facilities with ingredients from North America, Europe, Australia and New Zealand, which exceed industry standards for purity and nutrient content.

* 100% Satisfaction Guarantee - if you are unsatisfied for any reason, return the unused portion to the place of purchase for a full refund or replacement.

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Key Benefits

Easy. Effective. Safe.
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

Additional Info

Additional benefits for overall health
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

Because iodine intake from other food sources -- treats, another pet's food, etc. -- can compromise the effectiveness of low-iodine nutrition, it's critical that you follow your veterinarian's feeding instructions carefully and feed only y/d.

Feeding Guide

Daily Feeding Guide:

Important Feeding Information

  • Cover and refrigerate unused portion.
  • These amounts are a starting point only. Your cat may need less or more food to maintain proper weight. Adjust as needed. If you are unsure, ask your veterinarian.
  • With your veterinarian's approval, mix increasing amounts of your cat's new food with decreasing amounts of the old food over a 7-day period.
  • Prescription Diet formulas are available in a wide variety of dry foods and treats for your cat's unique needs, and canned foods with delicious flavors your cat will love. Supplementation with other foods or treats is unnecessary and may decrease the effectiveness of the food. When using with dry food, decrease the amount of canned food to avoid overfeeding.
  • Keep fresh water available at all times!
  • For best results, have your veterinarian monitor your cat's condition.

Feeding transition

Adult maintenance - using 5.5 oz (156 g) can

Weight of CatAmount per Day
6 lb (2,7 kg) 3/4 - 1 can
10 lb (4,5 kg)1 1/4 - 1 2/3 can
14 lb (6,4 kg)1 1/2 - 2 can
18 lb (8,2 kg)1 3/4 - 2 1/2 can
Use only as directed by your veterinarian.
Animal feeding tests using AAFCO procedures substantiate that Prescription Diet® y/d® Feline Thyroid Health provides complete and balanced nutrition for maintenance of adult cats.

Average Nutrient and Caloric Content

Canned 1207 kcal/kg (188 kcal/5.5 oz (156 g) can)

Dry Matter1
Carbohydrate (NFE)31.4
Crude Fiber3.1
Carnitine652 ppm
Iodine0.2 mg/kg


1The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles of products with differing moisture contents.


Water, Liver, Meat by-products, Chicken, Whole Grain Corn, Rice Flour, Chicken Fat (preserved with mixed tocopherols and citric acid), Chicken Liver Flavor, Powdered Cellulose, Calcium Carbonate, Fish Oil, Dried Yeast, Potassium Chloride, L-Lysine, DL-Methionine, Guar Gum, Vitamin E Supplement, Taurine, Choline Chloride, Salt, L-Cysteine, Thiamine Mononitrate, L-Carnitine, Dicalcium Phosphate, Ferrous Sulfate, Zinc Oxide, Ascorbic Acid (source of vitamin C), Niacin, Copper Sulfate, Manganous Sulfate, Pyridoxine Hydrochloride, Beta-Carotine, Calcium Pantothenate, Vitamin B12 Supplement, Riboflavin, Biotin, Vitamin D3 Supplement, Folic Acid.

y/d® Feline Thyroid Health - Canned yd 052742149608,052742149615 1496

Hill's® Prescription Diet® y/d® Feline Thyroid Health 4.4 5 60 60
Great to have a food instead of drugs for this condition! -My calico cat Mizzie is almost 17, she’d been so sick/ lost so much weight I thought she’d used up all her 9 Lives! Her previous Vet misdiagnosed her, so years passed with her getting worse and getting monthly prednisone shots. He prescribed the expensive Hill’s Rx food, dry and canned, but they didn’t help. Her new Vet tested properly and prescribed the Y/D and the thyroid medication - she was highly allergic to it, had to stop the drug. -She’s improved drastically since being on the canned Y/D, she only nibbles at the dry food infrequently. She won’t eat only the can Y/D, with her Vet’s knowledge, I cook chicken breasts/tenders in unsalted natural chicken broth and shred into tiny pieces ... she doesn’t bite into and chew her food so I shred the chicken, removing skin/gristle. -I empty can content into glass bowl, chill in the fridge, easier to handle. Wearing disposable gloves, roll the food into small balls, then break off and roll them into very tiny balls. Mixed in dish with the shredded chicken, topped with chicken broth, she loves it, hasn’t gained much weight but filled out. Spine/hip bones were protruding, now covered with flesh. Coat thick/shiny, she’s as alert/active as a kitten. - One issue: the top, bottom and sides of the food are darker, firmer from the oxidation process of canning, Used to scrape it off , too much/waste expense. Now I mix very thoroughly, pressing the firmer parts into same consistency, wearing gloves, stinky/hard to get odor off skin/nails. Same with the chicken! -I, too, wish I had known there were coupons, it is very expensive. Am hoping to get coupons soon for future purchases. Cost of a case is a struggle to keep paying, but I want to keep my cat healthy - and alive. October 8, 2013
She's improving-Hills helps--I assume Nearly lost my 13 year old cat--medical alternatives were well, not alternatives. She's been on this in wet and dry food = she is principally better..though not perfect..remember the food does not have a medication in it. The diet is designed around a less than normal functioning thyroid. After three weeks my cat is heavier and stronger and returned to playing with her toy mouse. September 23, 2014
Feeding my pets the best is very important! Hill's is the only brand of food I feed my dog and cat. With so many scares about animal food, I am never concerned that Hill's would jeopardize the heath of my animals. Thank you! December 22, 2013
This Y/D diet has helped my cat be healthier. Thanks for helping my Gi Gi kitty. She is 14 yrs old with health issues and this Y/D diet has helped her be healthier. Thanks, any coupons for discounts are appreciated because I am a senior with a low income. October 24, 2013
Great for elderly cats like mine! Helps my 17 yr old cat with Hyperthyroid..He LOVES the taste! October 16, 2013
Life saver My cat's health has imporved so much in one month, the vet was impressed, we hope to keep him comfortable and as healthy as we can for the months to follow, and even show the vet is wrong on his lifespan prodicition of only months,let's go for at least a year ! Cindi E. Corpus Christi Tx September 24, 2014
THANKS!!!! This product has helped my cat so much! It made her thyroid level get back to normal and she started to gain back weight!.I will always by this food, Thanks so much for making my cat stay healthy! I can't live without her. August 28, 2014
Helps stabilize my cat's thyroid My cat likes it and along with his medication he is kept at a stable level. June 28, 2014