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Hill’s Science Diet Y D Cat Food

What Is Hills Prescription Diet

Hills Prescription Diet y/d

Prescription Diet is one of the 3 main cat food brands of Hills. This brand aims to provide a solution to your cats health problems. Only the best ingredients from trusted sources is what Hills promises to provide with every bag or can of Hills Prescription Diet cat food.

This Hills brand of cat food products is divided into 5 categories according the health issues: Metabolic for weight management, i/d for digestive care, d/d for skin and food sensitivities, c/d for urinary care, and k/d for kidney care. Each subcategory has both dry and wet cat food variants.

As with any type of medical condition your cat may have, it is always best to consult your vet before purchasing products to treat the condition.

Hills Science Diet Kitten Savory Turkey Entre

Savory Turkey Entrée has a smooth, soft texture that kittens can eat with ease. It is made with high-quality protein for healthy, lean muscles. It has antioxidants, vitamins E and C for a strong immune system.

The first five ingredients are water, turkey, turkey giblets, pork liver, and salmon.


Rich turkey flavor.Kittens just love this Savory Turkey Entrée wet cat food. They enjoy the smooth texture, and just love the overall taste. This cat food is not just rich in turkey, it also has flavorful pork liver and salmon among other ingredients.

Reasonably priced.Customer reviews state that this canned cat food is reasonably priced for the high-quality ingredients it has.


Needs a bit more liquid.A handful of buyers find that this Hills product needs a bit more moisture. Some simply add a spoonful of water to the cat food to make a bit more sauce. This is a great way to give more hydration to your cats.

Savory Turkey Entrée cat food has high quality animal protein from turkey, salmon, pork, and chicken. This also make it extra tasty for kittens to enjoy. Many buyers reviews and ratings show that they find good value in this product as it has good quality ingredients, yet it is reasonably priced.

Hill’s Prescription Diet Y/d Feline


OR YOUR MONEY BACK If you are unsatisfied for any reason, return the unused portion to the place of purchase for a full refund or replacement

Hill’s® Prescription Diet® y/d® Feline is the safe, effective and easy way to manage thyroid health. Clinically proven to improve thyroid health in 3 weeks when fed as the sole source of nutrition.

How it works:

  • Controlled phosphorus and low sodium
  • High in taurine, L-carnitine & omega-3 fatty acids
  • Promotes desirable urine pH
  • Supports kidney, heart & urinary health
  • Visible improvement in skin & coat
  • Helps support a healthy body condition
  • Supports a healthy immune system

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.

Iodine Restores thyroid health by reducing T4 hormone production
Phosphorus & Sodium
Helps ensure optimal heart health
Magnesium Reduces building blocks of crystals & uroliths
Target Urine pH 6.4 6.6 Supports urinary tract health

*Urine pH of individual cats may vary due to complicating factors such as time of feeding before urine collection, type of urine collection, individual animal variation, and test methodology.

Formulated to help

reduce the risk of struvite & calcium oxalate crystals

Made in the USAwith global ingredients you can trust

Proud to have helped find a forever home & counting

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The Were All About Cats Standardrating Hills On What Matters

Weve analyzed Hills and graded it according to the Were All About Cats standard, evaluating the brand on species-appropriateness, ingredient quality, product variety, price, customer experience, and recall history. Heres how it rates in each of those six key areas.

  • Recall History 4/10

Overall Score: 6.5/10

We give Hills cat food a 39 out of 60 rating or a B- grade.

As part of our review process, weve submitted samples to an independent lab. You can see the full report here.

In addition to performing our own qualitative analysis of the brand, we submitted a sample of Hills Science Diet Chicken Recipe Adult Dry Cat Foods for analysis at an ISO 17025 certified food testing and analysis lab. We bought the product at full retail price, and the entire testing process was funded by All About Cats without direct input or influence from the cat food company.

Analytical testing in a food chemistry lab gives us the products exact macronutrient and micronutrient content, painting a clear picture of what youre putting in your cats bowl.

Remember that, when it comes to nutrient content, the cat food label only gives us a guaranteed analysis, which is a set of minimum and maximum valuesnot a description of whats in the food. In reality, the foods nutrient content may be substantially different from what you see on the label.

Hill’s Prescription Diet Y/d


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How Much Does Hills Cat Food Cost

Hills cat food ranges from moderately-priced to expensive. If your cat weighs 10 lbs, it would cost roughly $3.05 per day to feed them Hills Prescription Diet c/d canned food and about $3.63 for Hills Ideal Balance canned.

Like most cat food companies, Hills charges less for their dry foods. The Hills Prescription diet kibble mentioned in the product reviews above would cost about $0.52 per day.

Hills Prescription Diet Y/d Thyroid Care Cat Food 18kg


Confirmation of a Vet Prescription is requiredProduct

Feline y/dHills Prescription Diet y/d dryNew Zealand Information:By law the user must take due care, obtaining expert advice when necessary, to avoid unnecessary painand distress when using the product other than directed on the label. ACVM No. A10797.

See for registration conditions.

Registered to: Hill’s PetNutrition NZ Ltd

Prescription Diet y/d Thyroid Care is clinically proven to improve thyroid health in 3 weeks for cats when fed as the sole source of nutrition. Its made in the USA with global ingredients you can trust, and was developed by Hills 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.Features:

  • Supports kidney, heart & urinary health
  • Visible improvement in skin & coat
  • Helps support a healthy body condition
  • Supports a healthy immune system

IMPORTANTBecause iodine intake from other food sources — treats, another cats food, etc. — can compromise the effectiveness of low-iodine nutrition, its critical that you follow your veterinarians feeding instructions carefully and feed only y/d.

Adult maintenanceDaily Feeding GuideWeight of Cat Amount per Day:

6 lb 1/3 cup

8 lb 3/8 cup

10 lb 1/2 cup

12 lb 5/8 cup

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Hills Science Diet Adult Light Liver And Chicken Entre

This Hills product lets your kitty enjoy a super tasty meal while maintaining an ideal weight. This formula is nutritious yet low in fats and calories. Fiber helps control hunger, allowing them to feel fuller for longer.

Adult Light Liver and Chicken Entrées first five ingredients are: water, pork liver, pork by-products, chicken, and rice.


Loved even by picky kitties!This weight management food sure tastes great as kitties enjoy having this product for meals. It is meaty and the sauce is quite rich. Cats come running when they hear the can being opened.

Great for weight loss. This Adult Light Liver and Chicken Entrée is rich in protein instead of fats. It is also low-calorie to help kitties shed the excess fats. The high fiber content of this product helps kitties control their hunger pangs.


Paté-like texture.Some customers were expecting a more minced texture from this product based on the image on its label. They find that the texture is more like a paté, which some of their cats are not fans of. Non-paté fans have given this a few low ratings.

Adult Light Liver and Chicken Entrée is a good low-fat and low-calorie option for cats needing to shed some extra fluff. The rich flavor is quite popular too. However, if your feline friend is no fan of patés, this may not be the right product to buy.

Hills Science Diet Adult Tender Ocean Fish Dinner

Hills Prescription Diet Liver Care and Thyroid Care Cat Foods | Chewy

This product has chunks of baked ocean fish soaked in tasty gravy. It has the precise amount of nutrients to give adult cats the right amount of energy.

Tender Ocean Fish Dinners first five ingredients are water, ocean fish, chicken, pork liver, and wheat flour.


Kitties beg for more! Cats love the ocean fish chunks in this wet cat food. They love licking the sauce too. This is a great way to incorporate more moisture into your cats diet. Many buyers claim that this is their cats favorite wet food.

Visible health benefits. Owners have noted an improvement in their cats overall health after being fed with Adult Tender Ocean Fish Dinner cat food, according to reviews. They have noticeably healthy skin and hair. A review even mentioned a change in their cats behavior something that he takes as a sign of good health.


Contains chicken. A few customer reviews stated that this wet food is labeled as ocean fish, but actually contains chicken. Aside from fish and chicken, this cat food also contains pork liver.

Tender Ocean Fish Dinner is not just a tasty meal for cats. It also gives many health benefits from its nutrient-dense high-quality ingredients. According to some reviews, this may be the best cat food for kitties who like chunks of meat in their wet food. For this reason, this item from the Hills brand has received high ratings on

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Hills Prescription Diet Y/d Thyroid Care Dry Cat Food

Hills Prescription Diet y/d Thyroid Care Dry Cat Food has been formulated as a safe and effective diet for managing your cats thyroid health. For cats with hyper thyroid, this food has been proven to improve thyroid health in just 3 weeks.

Product details

  • Has limited iodine and controlled levels of phosphorus and sodium
  • is high in taurine, L-carnitine and omega-3 fatty acids
  • promotes desirable urine pH and supports kidney, heart and urinary health
  • contains clinically proven antioxidants to assist your cats immune system
  • product decreases T4 hormone production.


Corn Gluten Meal, Pork Fat, Whole Grain Corn, Soybean Mill Run, Egg Product, Chicken Liver Flavor, L-Lysine, Potassium Citrate, Lactic Acid, Dicalcium Phosphate, Fish Oil, Choline Chloride, Calcium Carbonate, Calcium Sulfate, DL-Methionine, Taurine, L-Tryptophan, Brewers Dried Yeast, vitamins , Niacin Supplement, Thiamine Mononitrate, Calcium Pantothenate, Vitamin A Supplement, Riboflavin Supplement, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Folic Acid, Biotin, Vitamin D3 Supplement), minerals , L-Carnitine, Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene

  • Shipping Policy

Jumbo Pets offers FLAT RATESHIPPING as follows:

  • $6.95 nationally for all parcels under 500g
  • $6.95 to Sydney, Melbourne, Brisbane and Wollongong
  • $8.95 to Canberra, Gosford, Newcastle and the NSW Central Coast

Jumbo Pets offers FREE SHIPPING as follows:

May Not Be An Ideal Diet For Cats

The dry y/d® contains no meat. Cats are obligate carnivores, raising the question, is this adequate for their needs?

Per Hills, the protein is supplied by corn gluten meal and eggs. Animal protein apparently contains too much iodine. The canned formula includes more meat , so would be the better choice of the two. Hills compares the protein content of y/d® to that in g/d®, which is moderately protein-restricted. It is not likely to provide enough protein for thin cats recovering from hyperthyroid malnutrition, and not low enough for cats in later stages of renal failure. We do not recommend protein-restricting debilitated carnivores unless they are in moderately azotemic renal failure.

Is iodine deficient

Iodine is a required nutrient for a reason. We do not know what impact iodine deficiency will have long term upon either normal or hyperthyroid cats.

May be impractical in a multiple cat household

y/d® cannot be fed exclusively to normal cats

y/d® must be fed exclusively to the hyperthyroidcat in order to achieve significant lowering of thyroid hormone levels. Even minute levels of iodine from other sources can diminish the effectiveness of the diet.

Therefore, feedings for cats in a multiple cat household should be separate.

Hills® allows that normal cats may eat y/d® if supplemented with maintenance cats foods. Even so, feeding y/d® to an entire household could be cost prohibitive, increasing the food cost by hundreds of dollars per cat per year.


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Hills Science Diet Adult Indoor Dry Cat Food

Designed to fuel the needs of indoor cats aged 1-6 years old, the Indoor dry food has natural fiber that supports digestive health. This easy to digest food is high in protein from chicken and corn gluten meal.

The first five ingredients of this cat food are chicken, whole grain wheat, corn gluten meal, powdered cellulose, and chicken fat.


Helps with weight management. Many overweight cats who have been switched to this Adult Indoor food were able to shed their extra weight. It is able to keep them full for longer. As a result, cats are more active, and their joints are feeling much better as they are lighter.

Shiny coats. This is another dry product of the Hills brand that gives cats that healthy, silky fur. Cat parents are just so proud of their kitties soft, glossy coats. Not only is it pretty, but it is also an indication of a cats good health. This is another kibble from the brand that received high ratings for the positive effects on their kitties coats.


Kibbles are too large.Some cat owners have noticed a change in the kibble size of this dry food. They appear to be larger than previous formulas. Cats who are used to the old formula or kibble size do not seem to like the new larger kibbles.

Hills Science Diet Hairball Control

Hillâs Prescription Diet Cat Y/D ÎονÏÎÏ?βα

Adult Hairball Control dry food product has vitamin E, omega-3 and 6 for healthy skin and hair. It is rich in protein for lean muscles. The protein content of this product comes from chicken and corn gluten meal.

The first five ingredients: chicken, whole grain wheat, corn gluten meal, chicken fat, and powdered cellulose.


Helped prevent hairballs. As this dry food from the Hills brand is made specifically for cats who suffer from frequent hairballs, it has been tried by numerous cats who needed help with that issue. Many of them have shown improvements from lessened frequency of hairballs to no longer having hairballs at all.

Great flavor. Adult Hairball Control is loved by kitties. It is packed with flavor from chicken, chicken fat, and chicken meal. No wonder cats get excited when they hear this dry food hitting their bowls. Ratings show that this particular flavor is popular among kitties.


Kibbles are too large. This is another cat product that had a change in kibble size. It is much larger than before, and some cats who are used to the smaller kibble, have trouble chewing or even liking this dry food product.

Based on our review, this Adult Hairball Control from the Hills brand is quite popular among cats because of its rich chicken flavor. Made with real chicken, this product is high in protein. It also has fibers that have helped cats who were suffering from frequent hairballs. For this reason, many have given this item high ratings.

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Science Diet Cat Food Review: Vet

Having endless pet product options has its ups and downs. We have more options to choose from according to our pets needs. Many pet parents have been opting for organic, more holistic approach to their pets nutrition.

However, there are still a lot of cat parents who prefer to put their trust in experts who have spent many years studying the science of animal nutrition and health. With this in mind, we have made this 2021 Hills Science Diet cat food review to help you find the right veterinarian-approved food for your cat.

Here at FelineLiving.Net we have a dedicated mission to provide cat owners like you with well-researched information so they can provide the best care and nutrition to their cat.

Our readers rely upon the cat food reviews, articles and recall alerts that we research and publish. We also routinely update and review our own reviews ensuring that any changes by manufacturers are brought to your attention.

FelineLiving.Net is maintained by Mary Nielsen & her staff. Mary is an animal lover of both cats and dogs. She and her staff are passionate about animals and work hard to provide you with a wealth of information for you and your cat.

FelineLiving.Net is supported by our readers. If you make a purchase through one of our links, we may earn a referral fee. This helps cover the cost of operating our free blog. Thanks for your support!

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