The 13 Best Renal Cat Foods For Kittens, Adults, Seniors, And All Stages of Kidney Diseases  (As Recommended by Cat Lovers on Quora, Reddit, Amazon, And Chewy Reviews)

Looking for the best cat renal food for your beloved feline friend?

In this guide, you’ll uncover the best of the best I found after combing through multiple user reviews on Amazon, Chewy, and the conversations of cat parents on Reddit.

What you find here is based on my research. After choosing the best renal food for your cat, I recommend you learn more about them on their website or speak to a veterinary expert.

Let’s get into it!

The overall best renal cat food recommended by consumers – Royal Canin Renal Support D Thin Slices in Gravy

• Highly palatable and helps to stimulate the appetite 
• Formulated to support kidney function
• Reported to improve the health and well-being of cats diagnosed with Chronic Kidney Disease (CKD).

Chewy: 4.4

The best vet recommended renal cat food -Hill’s Science Diet

• Backed by vets to protect vital kidney function and slow down the progression of CKD.
• Formulated with Enhanced Appetite Triggers (E.A.T) technology to stimulate appetite.
• High levels of essential amino acids and L-Carnitine to support muscle mass maintenance.

Chewy: 4.4

Renal cat food best for buck (budget) – Hill’s Prescription Diet k/d Kidney Care Starter Kit

• Packed with wet and dry food options for different flavours and textures.
• Formulated with ActiveBiome+ Kidney defense to help protect kidney function.
• Most cost-effective of all the options.

Chewy: 4.5

Best renal cat food for kittens – Weruva Wx Phos Focused Chicken Formula Grain

• The formula is specifically designed with low phosphorus.
• Made with high-quality, highly digestible lean proteins.
• Moisture-rich formula that helps to increase hydration.

Chewy: 4.1

Best renal cat food for adults -Royal Canin Renal Support E

• The “E” stands for “Enticing”, and the formula is crafted with soft pate texture.
• Formulated with low phosphorus and targeted protein levels to support kidney health.
• Energy-dense to ensure cats receive adequate caloric intake even in smaller meal portions.

Chewy: 4.4

Best renal cat food for seniors – Royal Canin Adult Renal Support Early Consult

• Moderate phosphorus levels, EPA, and DHA to support kidney health during the initial stages.
• With antioxidants and New Zealand Green Lipped Mussel to address early signs of aging.
• Contains highly digestible proteins and balanced fibers.

Chewy: 4.5

Best dry renal cat food – Royal Canin Renal Support S

• Low phosphorus and moderate levels of high-quality protein that support renal function
• Designed with a specific aromatic profile and kibble shape to stimulate appetite.

Chewy: 4.7

Best tasty renal cat food – Royal Canin Veterinary Diet Adult Renal Support T

• Highly palatable, energy-dense formula featuring thin slices in gravy to stimulate appetite.
• Contains an antioxidant complex, omega-3 fatty acids from fish oil, and low phosphorus, 
• Targeted protein levels to support and promote kidney health.

Chewy: 4.3

The best wet renal cat food – Hill’s Prescription Diet k/d Kidney

• Palatable to stimulate the appetite of cats with decreased food intake due to kidney disease. 
• Controlled phosphorus and sodium levels and high essential amino acids.
• Therapeutic levels of L-carnitine and omega-3 fatty acids to support kidney function and muscle mass.

Chewy: 4.4

Best natural cat renal food – Blue Buffalo K+ M

• Controlled levels of protein, phosphorus, and sodium to support kidney function. 
• Contains DHA, glucosamine, and chondroitin to promote joint health and mobility.
• Made with real chicken as the first ingredient and free from chicken by-product meals

Chewy: 4.5

Best renal cat food for early-stage kidney disease – Purina Pro Plan Veterinary Diets NF Kidney Function Early Care

• High-quality protein to support kidney function and maintain lean body mass
• Formulated with restricted phosphorus to prevent secondary hyperparathyroidism,
• Omega-3 fatty acids help reduce inflammatory mediators, supporting overall kidney health.

Chewy: 4.0

Best renal cat food for advanced stage kidney disease – Purina Pro Plan Veterinary Diets NF Kidney Function Advanced Care

• Formulated with reduced amounts of high-quality protein.
• Contains restricted phosphorus to reduce the workload on diseased kidneys.
• Enriched with omega-3 fatty acids, specifically EPA and DHA

Chewy: 3.8 

Best renal cat food to prevent kidney disease – Purina Pro Plan Vital Systems Chicken Entrée

• Enriched with omega-3 fatty acids, which are known to support kidney health in cats. 
• Contains choline, an essential nutrient that supports healthy brain function in cats.
• Made with real chicken as the primary ingredient, providing a high-quality protein source

Chewy: 4.4

What should I consider when choosing the best renal cat food for my cat?

From respected veterinary sources, here are the factors to consider, ranked by significance from top to bottom.

• Phosphorus levels
• Protein content
• Moisture content
• Palatability and appetite stimulation 
• Sodium levels
• Omega-3-fatty acids
• Antioxidants and B Vitamins
• Potassium levels
• Prescription vs. non-prescription

Phosphorus Levels 

In cats with kidney disease, excess phosphorus cannot be efficiently removed, and this would lead to further kidney damage. High phosphorus levels accelerate kidney deterioration. So opt for foods with low phosphorus to slow disease progression. Veterinary-prescribed renal diets typically contain 0.3% – 0.6% phosphorus on a dry matter basis. Always check the label for “reduced phosphorus” or consult a veterinarian.

Protein quality and content

While cats need protein to build muscle, too much protein can overload the kidneys, leading to further damage.  Reduced but high-quality animal protein minimizes kidney workload while maintaining muscle mass. Look for foods that contain high-quality protein, like chicken, turkey, fish, or egg whites. Avoid foods with excessive by-products as they may be harder for cats to digest.

Moisture content 

Cats with kidney disease are prone to dehydration due to increased urine output. Ensuring enough consumption of fluids helps to flush toxins and supports kidney function. Wet food is generally recommended for hydration, but if dry food must be administered, ensure your cat drinks enough water. A water fountain can encourage drinking, as cats prefer running water.

Palatability and appetite stimulation

Cats with CKD often have reduced appetite, which leads to weight loss. A food that smells and tastes good stimulates them to eat regularly. When purchasing food, note that morsels in gravy, pate, or lightly cooked meals may be more appealing than dry kibble. Also, foods with strong-smelling ingredients like chicken liver or Tuna can attract picky eaters. Try warming up wet food as well, to enhance the aroma.

Sodium levels

High sodium intake can lead to high blood pressure, which can worsen kidney disease and increase the risk of heart problems. Look for low-sodium renal diets to reduce strain on kidneys and manage blood pressure. Avoid cat foods with high salt content, artificial preservatives, and excessive flavor enhancers.

Omega-3 fatty acids

Omega-3 fatty acids reduce inflammation, slow kidney damage, and support heart health. These healthy fats help to improve blood flow to the kidneys and slow the progression of Chronic Kidney Disease(CKD). Foods containing fish oil, salmon, or flaxseed oil serve as a natural source of Omega-3s.

Antioxidants and B vitamins

Cats with kidney disease often experience nutrient imbalances due to increased urination. The right food should be formulated with antioxidants and B vitamins, which would help to replenish these essential nutrients. B Vitamins help to support energy levels and metabolism, while antioxidants help to combat oxidative stress.

Potassium levels

Many cats with CKD develop low potassium, so a diet with added potassium can help to maintain muscle function.

Prescription vs. Non-Prescription

Prescription diets are tailored for renal disease, but some high-quality non-prescription options exist for budget-conscious owners.

Consulting your veterinarian before making any dietary changes will help ensure your cat’s needs are met. 

What are the best healthy renal foods for your cat?

Below is a list of the best renal foods for your cat.

• Royal Canin Renal Support D
• Hill’s Prescription Diet k/d Kidney 
• Royal Canin Veterinary Diet Adult Renal Support T
• Royal Canin Renal Support S 
• Royal Canin Renal Support E
• Purina Pro Plan Veterinary Diets NF Kidney Function Advanced Care
• Purina Pro Plan Veterinary Diets NF Kidney Function Early Care
• Royal Canin Adult Renal Support Early
• Hill’s Science Diet
• Purina Pro Plan Vital Systems Chicken
• Blue Buffalo K+M
• Weruva Wx Phos Focused Chicken Formula Grain
• Hill’s Prescription Diet k/d Kidney Care Starter Kit

Let’s compare them in a table. 

Product	Best For	What Users Love	What Users Didn’t Like
Royal Canin Renal Support D	Overall kidney health support.	Highly palatable	Expensive
Hill’s Prescription Diet k/d Kidney	Managing kidney disease with wet food.	Prebiotics to support digestive health	Some cats may be sensitive to certain ingredients
Royal Canin Veterinary Diet Adult Renal Support T	Appetite stimulation in renal cats	Specific aromatic profiles	Limited flavor options
Royal Canin Renal Support S	Dry food option for kidney support.	Savory aroma	Pricey
Royal Canin Renal Support E	Adult cats that need kidney support.	High moisture content aids hydration.	Higher carbohydrate content
Purina Pro Plan Veterinary Diets NF Kidney Function Advanced Care	Advanced-stage kidney disease management.	High moisture content	Expensive
Purina Pro Plan Veterinary Diets NF Kidney Function Early Care	Early-stage kidney disease intervention.	Moderate protein content supports	Expensive
Royal Canin Adult Renal Support Early	Senior cats with early kidney concerns.	Highly palatable loaf-in-sauce texture	Limited flavor options
Hill’s Science Diet	General vet-recommended nutrition.	High-quality protein source	Expensive
Purina Pro Plan Vital Systems Chicken	Preventing kidney disease proactively.	High-quality protein	Pricey
Blue Buffalo K+M	Natural ingredients for kidney support.	High quality protein	Limited to a single flavor option
Weruva Wx Phos Focused Chicken Formula Grain	Kittens with kidney concerns.	High moisture content helps keep cats hydrated.	Pricey
Hill’s Prescription Diet k/d Kidney Care Starter Kit	Budget-friendly kidney care options.	High-quality protein sources	Contains various sugars

Royal Canin Renal Support D Thin Slices in Gravy 

• Weight:3 ounces (85 grams).
• Form: Thin Slices in Gravy.
• Ingredients: Water sufficient for processing, chicken by-products, chicken liver, pork liver, chicken, wheat flour, vegetable oil, powdered cellulose, pork plasma, modified corn starch, corn flour, egg product, natural flavors, fish oil…
• Nutrient emphasis: Formulated with low phosphorus and targeted protein levels to support kidney function.
• Flavor: Chicken and pork.
• Life stage: Adult.

Royal Canin Veterinary Diet Renal Support D Thin Slices in Gravy is a specialized wet cat food formulated to support adult cats with chronic kidney disease (CKD). 

The “D” stands for “Delectable,” indicating its highly palatable nature, designed to stimulate the appetite of cats experiencing decreased hunger due to renal issues.

The wet food consists of thin slices in a savory gravy, appealing to cats’ taste preferences and aiding in increased water intake, which is crucial for kidney health. 

The formulation includes controlled levels of high-quality proteins and low phosphorus content to minimize kidney workload and slow disease progression. 

Also, incorporating fish oil provides omega-3 fatty acids, which help reduce inflammation and support renal function.

What users like about this product

• Highly palatable
• Low phosphorus and moderate protein
• Omega-3 Fatty acids and antioxidants
• Balanced moisture content
• Veterinary-approved formula

What users don’t like about this product 

• Prescription required
• Expensive
• Limited Protein (may lead to muscle loss over time)
• Not grain-free

Who and what is Royal Canin Veterinary Diet best for?

• Cats with chronic kidney disease (CKD).
• Cats with poor appetite
• Cats that need more hydration

Hill’s Science Diet 

• Weight: Each can contains 5.5 oz (0.156 kg).
• Form: Minced wet food in gravy.
• Ingredients: Chicken, water, pork liver, carrots, rice, rice starch, wheat gluten, spinach, chicken liver flavor, soybean oil, potassium alginate, powdered cellulose, calcium chloride, fish oil, natural flavor, dried tomato pomace, choline chloride, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate…
• High nutrient: Formulated with high-quality protein to help maintain lean muscle mass and controlled phosphorus levels to support kidney health.
• Made in: United States.
• Guaranteed protein: Specific protein percentages are not provided; however, the formula is designed to support lean muscle mass in senior cats.
• Calories per ounce: Approximately 23 kcal/oz.
• Nutrient distribution: Approximately 28% protein, 14% fat, and 50% carbohydrates on a dry matter basis.
• Flavor: Chicken.
• Life stage: Senior cats aged 7 years and older.
• Other attributes: Grain-free, contains antioxidants, formulated with omega-3 and omega-6 fatty acids, contains natural ingredients.

Hill’s Science Diet Adult 7+ Senior Adult 7+ Premium Nutrition Wet Cat Food is designed to cater to the unique dietary requirements of senior cats. 

The inclusion of high-quality chicken as the primary protein source helps to maintain lean muscle mass, which is crucial as cats age and may experience muscle loss. 

The controlled phosphorus levels support kidney health, reducing the risk of kidney-related issues common in older felines. 

Antioxidants like vitamins C and E bolster the immune system, enhancing the cat’s ability to fight infections.

Omega-3 and omega-6 fatty acids contribute to a shiny coat and healthy skin, while the blend of fruits and vegetables, including carrots, broccoli, and spinach, provides essential vitamins and minerals for overall health.

What users like about Hill’s Science Diet 

• High-quality protein source to support lean muscle maintenance.
• Controlled phosphorus levels to promote kidney health.
• Inclusion of antioxidants to strengthen the immune system.
• Omega fatty acids for skin and coat health.
• Incorporation of fruits and vegetables for added nutrients.
• Made with natural ingredients, ensuring quality and safety.
• Positive reputation among veterinarians and pet owners.

What users don’t like

• Requires a prescription from a veterinarian, limiting accessibility.
• Some cats may not prefer the minced texture.
• Higher cost compared to non-prescription wet cat foods.

Who and what Hill’s Science Diet is best for

• Senior cats aged 7 years and older that require specialized nutrition to support aging-related health concerns. 
• Cats needing assistance in maintaining muscle mass, kidney function, immune health, and skin and coat condition. 

Hill’s Prescription Diet k/d Kidney Care Starter Kit 

• Weight: dry food bag 5.25 oz (0.15 kg); canned food 5.5 oz (0.16 kg) and 2.9 oz (0.082 kg) sizes.
• Form: The pack includes both dry kibble and wet canned foods (pâté and stews).
• Dry food ingredients: Chicken, brown rice, corn protein meal, chicken fat, brewers rice, whole grain wheat, pea protein, egg product, chicken liver flavor, powdered cellulose, fish oil, lactic acid, calcium sulfate, soybean oil, L-threonine, potassium citrate, L-arginine, L-lysine, betaine, calcium carbonate, whole grain oats ..
• Wet food ingredients: Ingredients vary by flavor; for example, the Chicken & Vegetable Stew contains chicken, water, carrots, tuna, chicken, spinach, rice, chicken fat, rice starch, natural flavor, pea protein…
• High iutrient: Designed with reduced phosphorus and protein levels to support kidney health.
• Made in: United States.
• Nutrient distribution: Formulated to provide balanced nutrition with controlled levels of protein, phosphorus, and other minerals to support kidney function.
• Flavor: Variety pack includes chicken, tuna, and ocean fish flavors.
• Life stage: Suitable for adult cats.
• Other attributes: Veterinary Diet, Protein, Low Carb, Gravy (in wet foods).

Hill’s Prescription Diet k/d Kidney Care Starter Kit Variety Pack Cat Food is formulated to support cats with kidney disease. 

The dry kibble and wet canned foods are designed with reduced phosphorus and protein levels to minimize kidney workload. 

The inclusion of prebiotics aims to support gut health, which is linked to kidney function. 

The variety pack allows cats to experience different flavors and textures, which can be beneficial for cats with reduced appetite due to kidney issues. 

What user live

• Tailored for kidney health with appropriate nutrient levels.
• Includes a variety of flavors and textures to cater to different preferences.
• Contains prebiotics to support digestive health.
• Developed by veterinarians and nutritionists.

What users don’t like

• Requires a prescription from a veterinarian.
• May not be suitable for cats without kidney issues.
• Some cats may be sensitive to certain ingredients.
• Higher cost compared to non-prescription diets.
• Limited availability in some regions.

Who it’s best for

• Adult cats diagnosed with kidney disease. 
• Cats that are picky eaters or that need to be enticed to eat due to reduced appetite associated with kidney issues. 

Weruva Wx Phos Focused Chicken Formula 

• Weight: 3 oz (85g) or 5.5 oz (156g) per can
• Form: Chunks in gravy
• Ingredients: Chicken broth, chicken, tilapia, tapioca starch, sunflower seed oil, calcium lactate, locust bean gum, xanthan gum, taurine, vitamins, minerals
• High in: High moisture content, moderate protein, low phosphorus
• Made in: Thailand (human-grade facility)
• Guaranteed protein: 10% min
• Calories per ounce: Approx. 20 kcal/oz
• Nutrient distribution:
  • Protein: 10% min
  • Fat: 2% min
  • Fiber: 0.5% max
  • Moisture: 85% max
  • Phosphorus: Low for kidney support
• Flavor: Chicken & Tilapia
• Cat life stage: Adult & Senior
• Other attributes: grain-free, Low Phosphorus, High Moisture, non-GMO, no Carrageenan, no artificial additives.

Weruva Wx is formulated with natural ingredients and no artificial additives.

The recipe includes real chicken and tilapia in a light, hydrating gravy, making it palatable for cats who may be losing their appetite due to kidney issues. 

The high moisture content supports hydration, which is crucial for kidney function, while the controlled phosphorus levels help reduce stress on the kidneys.

Since Weruva Wx is made in human-grade facilities with high-quality ingredients, pet owners who prefer a more natural approach to renal support often choose it over prescription diets. The grain-free and carrageenan-free formulation also makes it suitable for cats with sensitivities.

What users like about Weruva Wx Phos Focused Chicken Formula

• High moisture content helps keep cats hydrated.
• Made with real, human-grade chicken and tilapia.
• No artificial additives, carrageenan, or grains.
• Good for early-stage kidney disease and picky eaters.

What users don’t like about Weruva Wx Phos Focused Chicken Formula

• Not a prescription diet, so may not be suitable for advanced kidney disease.
• Lower fat content may not provide enough calories for underweight cats.
• Some cats may dislike the fish-based taste.
• Higher price compared to regular wet foods.

What Weruva Wx Phos Focused Chicken Formula is best for

Cats with early-stage kidney disease that need a natural, non-prescription, renal-friendly diet.

Royal Canin Renal Support E

• Full Name: Royal Canin Veterinary Diet Adult Renal Support E Loaf in Sauce canned cat food
• Weight: 5.1 oz (145g) per can
• Form: Loaf in sauce
• Ingredients: Water, chicken, pork liver, chicken liver, corn flour, wheat gluten, fish oil, powdered cellulose, vitamins, minerals, taurine, DL-methionine
• High in: Omega-3 fatty acids, antioxidants, low phosphorus, controlled sodium
• Made in: USA
• Guaranteed Protein: 7.5% min
• Calories Per Ounce: Approx. 30 kcal/oz
• Nutrient Distribution:
  • Protein: 7.5% min
  • Fat: 6% min
  • Fiber: 2% max
  • Moisture: 78% max
  • Phosphorus: Low for kidney support
• Flavor: Chicken & pork liver
• Cat Life Stage: Adult & senior
• Other Attributes: Veterinary Diet, Low Phosphorus, Omega-3 Enriched, Soft Loaf Texture, Appetite-Stimulating Formula

In Royal Canin Veterinary Diet Renal Support E Loaf in Sauce, the “E” in the name stands for “Enticing,” indicating that this renal food is created to appeal to cats with reduced appetites.

This formula contains controlled phosphorus and sodium to reduce kidney workload while providing a blend of antioxidants and omega-3 fatty acids for kidney and overall health. 

The soft loaf texture in a savory sauce makes it easy for cats with dental issues or poor appetites to consume.

The food’s high moisture content helps keep cats hydrated, an essential factor in managing CKD. 

It’s one of the multiple renal support options Royal Canin offers, allowing pet owners to rotate flavors to prevent food fatigue in picky eaters.

What users like about this product 

• Soft loaf texture is easy to eat and digest.
• Omega-3 fatty acids help reduce kidney inflammation.
• High moisture content aids hydration.

What users don’t like about this product 

• Higher carbohydrate content compared to some other renal diets.
• Some cats may not like the texture of the loaf.
• Expensive compared to non-prescription foods.

What is Royal Canin Veterinary Diet Adult Renal Support E best for?

Cats with moderate to advanced kidney disease needing an appetizing, soft-textured renal diet.

Royal Canin Adult Renal Support Early Consult 

• Weight: Each can contains 3 oz (0.085 kg).
• Form: Loaf in sauce.
• Ingredients: Water sufficient for processing, pork by-products, chicken liver, brewers rice flour, chicken by-products, natural flavors, powdered cellulose, fish oil, wheat gluten, calcium carbonate, guar gum, tomato pomace, taurine, potassium chloride, calcium sulfate, sodium tripolyphosphate, carrageenan, choline chloride, lecithin, vitamins [DL-alpha tocopherol acetate (source of vitamin E) …
• High Nutrient: Formulated with moderate phosphorus levels, EPA+DHA omega-3 fatty acids, and an antioxidant complex to support early kidney health.
• Made in: United States.
• Guaranteed protein: Crude Protein (min.) 7.0%.
• Calories per ounce: Approximately 82 kcal/oz.
• Nutrient distribution: Crude Protein (min.) 7.0%, Crude Fat (min.) 3.5%, Crude Fiber (max.) 1.8%, Moisture (max.) 79.5%, Eicosapentaenoic + Docosahexaenoic acid (EPA + DHA) (min.) 0.1%, Phosphorus (max.) 0.17%.
• Flavor: Pork and chicken liver.
• Life stage: Adult cats.
• Other attributes: Veterinary Diet, supports kidney health, contains EPA+DHA, antioxidant complex, promotes urinary health.

Royal Canin Veterinary Diet Adult Renal Support Early Consult Loaf in Sauce Canned Cat Food is specifically designed to address the dietary needs of adult cats with early-stage kidney concerns. 

The inclusion of moderate phosphorus levels helps reduce kidney workload, while EPA+DHA omega-3 fatty acids support renal function. 

An antioxidant complex, including vitamins E and C, aids in neutralizing free radicals, promoting tissue and cellular health. 

The loaf-in-sauce texture enhances palatability, encouraging consumption, especially in cats with reduced appetite due to kidney issues. 

Additionally, this diet features the S/O Index, promoting a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals.

What user like

• Formulated to support early kidney health with moderate phosphorus levels.
• Contains EPA+DHA omega-3 fatty acids beneficial for renal function.
• Enriched with antioxidants to promote tissue and cellular health.
• Highly palatable loaf-in-sauce texture appeals to cats with reduced appetite.

What users don’t like

• Requires a prescription from a veterinarian, limiting accessibility.
• Limited flavor options; may not suit all cats’ taste preferences.
• Higher cost compared to non-prescription diets.

Who it’s best for

• Adult and senior cats diagnosed with early-stage kidney disease or those at risk.

Royal Canin Renal Support S

• Weight: Available in 3 lb (1.36 kg) and 6.6 lb (3 kg) bags.
• Form: Dry kibble with a square shape and savory aroma.
• Ingredients: Corn, chicken fat, pork digest, brewers rice, corn gluten meal, pea fiber, fish meal, natural flavors, dried chicory root, wheat gluten, fish oil, calcium carbonate, vegetable oil, sodium silico aluminate, potassium chloride…
• High nutrient: Formulated with low phosphorus levels, controlled protein content, and supplemented with EPA and DHA omega-3 fatty acids to support kidney function.
• Made in: United States.
• Guaranteed protein: Crude Protein (min.) 22.5%, Crude Protein (max.) 26.5%.
• Calories per ounce: Approximately 142 kcal/oz.
• Nutrient distribution: Crude Protein (min.) 22.5%, Crude Fat (min.) 19.5%, Crude Fiber (max.) 5.0%, Moisture (max.) 8.0%, Phosphorus (max.) 0.55%, EPA+DHA (min.) 0.34%.
• Flavor: Savory blend with a unique aromatic profile.
• Life stage: Adult cats.
• Other attributes: Veterinary Diet, supports kidney health, contains EPA+DHA, designed to stimulate appetite, energy-dense formula.

Royal Canin Veterinary Diet Renal Support S is specifically designed to address the nutritional needs of adult cats with renal disease. 

The “S” in the product name stands for “Savory,” highlighting its focus on stimulating the appetite through appealing aromas and flavors.

The square-shaped kibble is formulated with a savory aroma to stimulate the appetite of cats experiencing reduced food intake due to kidney issues. 

The diet features reduced levels of high-quality protein and restricted phosphorus to minimize kidney workload. 

Supplemental EPA and DHA omega-3 fatty acids are included to help reduce inflammation associated with kidney disease. 

Its energy-dense composition allows for smaller meal portions, helping cats with decreased appetites.

What users like

• Savory aroma and square-shaped kibble designed to stimulate appetite.
• Reduced protein and phosphorus levels to lessen kidney strain.
• Contains EPA and DHA omega-3 fatty acids to help reduce inflammation.
• Energy-dense formula suitable for cats with decreased food intake.

What user don’t like

• Requires a veterinarian’s prescription, limiting direct accessibility.
• Contains corn and wheat gluten, which may not be suitable for all cats.
• Some cats may not prefer the square-shaped kibble.
• Higher cost compared to non-prescription diets.
• Limited flavor options; may not appeal to all cats’ taste preferences.

Who it’s best for

• Adult cats diagnosed with renal disease requiring a specialized diet to support kidney function. 

Royal Canin Veterinary Diet Adult Renal Support T 

• Weight: Each can contains 3 oz (0.085 kg).
• Form: Thin slices in gravy.
• Ingredients: Water sufficient for processing, chicken liver, pork liver, chicken by-products, salmon, corn flour, wheat flour, powdered cellulose, modified corn starch, pork plasma, vegetable oil, natural flavors, potassium citrate, calcium carbonate, fish oil, taurine, guar gum, fructooligosaccharides, salt, choline chloride…
• High nutrient: Formulated with low phosphorus levels, moderate high-quality protein, and specific aromatic profiles to support kidney function and stimulate appetite.
• Made in: United States.
• Guaranteed protein: Crude Protein (min.) 5.1%, Crude Protein (max.) 8.6%.
• Calories per ounce: Approximately 82 kcal/oz.
• Nutrient distribution: Crude Protein (min.) 5.1%, Crude Fat (min.) 4.5%, Crude Fiber (max.) 1.7%, Moisture (max.) 81.0%, Phosphorus (max.) 0.14%.
• Flavor: Chicken liver, pork liver, chicken, and salmon.
• Life stage: Adult cats.
• Other attributes: Veterinary Diet, supports kidney health, contains EPA+DHA, designed to stimulate appetite, energy-dense formula.

Royal Canin Veterinary Diet Adult Renal Support T Thin Slices in Gravy Canned Cat Food is specifically designed to meet the dietary needs of adult cats with renal insufficiency. 

The thin slices in gravy texture enhance palatability, encouraging consumption in cats with reduced appetite.

Formulated with low phosphorus levels and moderate amounts of high-quality protein, this diet helps support kidney function while minimizing kidney workload. 

The inclusion of specific aromatic profiles aims to stimulate the appetite, particularly in cats prone to food aversion.

What users like

• Thin slices in gravy texture designed to stimulate appetite.
• Contains low phosphorus levels and moderate high-quality protein to reduce kidney workload.
• Incorporates specific aromatic profiles to encourage feeding in cats with food aversion.
• Energy-dense formula suitable for cats with decreased appetite.

What users don’t like

• Contains multiple protein sources, which may not suit all cats.
• Some concerns about the quality of ingredients used.
• Limited flavor options; may not suit all cats’ taste preferences.
• Higher cost compared to non-prescription diets.

Who it’s best for

• Adult cats diagnosed with renal insufficiency requiring a specialized diet to support kidney function. 

Hill’s Prescription Diet k/d Kidney

• Weight: Each can contains 2.9 oz (82 g)
• Form: Stew with bite-sized chunks in gravy
• Ingredients: Water, chicken (12%), pork liver, rice starch, rice flour, animal fat, digest, pea protein, rice, minerals, cellulose, dried carrots, fish oil, soybean oil, spinach powder, vitamins, oat bran, various sugars, taurine, fructo-oligosaccharides, dried egg yolks, trace elements
• High nutrient: Formulated with reduced phosphorus and sodium levels to protect vital kidney function
• Made in: United States
• Guaranteed protein: Crude Protein (min.) 5.8%
• Calories per ounce: Approximately 24 kcal/oz
• Nutrient distribution: Crude Protein 5.8%, Crude Fat 4.8%, Crude Fiber 0.6%, Moisture 80.6%, Calcium 0.14%, Phosphorus 0.10%, Sodium 0.05%, Potassium 0.19%, Magnesium 0.01%
• Flavor: Chicken with added vegetables
• Life stage: Adult cats
• Other attributes: Veterinary Diet, supports kidney health, contains ActivBiome+ Kidney Defense prebiotic blend, designed to stimulate appetite

Hill’s Prescription Diet k/d Chicken & Vegetable Stew is crafted to support cats with chronic kidney disease (CKD). 

The formulation includes reduced phosphorus and sodium levels to help protect vital kidney function. 

Additionally, it contains the ActivBiome+ Kidney Defense, a proprietary blend of prebiotics shown to nourish the gut microbiome, which may help support kidney function. 

The stew’s texture and flavor are designed to entice cats with diminished appetites, encouraging adequate nutritional intake.

What users like

• Reduced phosphorus and sodium levels to help protect vital kidney function
• Bite-sized chunks in gravy designed to stimulate appetite
• Contains high-quality protein sources like chicken and pork liver
• Includes essential vitamins and minerals to support overall health

What users don’t like

• Requires a veterinary prescription, limiting accessibility
• Contains various sugars, which may not be ideal for all cats
• Some cats may not prefer the stew texture or flavor
• Higher cost compared to non-prescription cat foods
• Limited flavor options may not cater to all feline preferences

Who it’s best for

• Adult cats diagnosed with chronic kidney disease or other conditions requiring renal support. 

Blue Buffalo K+ M 

• Weight: Available in 7 lb (3.18 kg) bags
• Form: Dry kibble
• Ingredients: Deboned chicken, peas, pea starch, potato starch, dried egg product, pea protein, chicken fat (preserved with mixed tocopherols), natural flavor, flaxseed (source of omega 3 and 6 fatty acids), powdered cellulose, fish oil (source of DHA), potassium citrate, calcium carbonate, DL-methionine…
• High nutrient: Controlled levels of protein and minerals to support kidney function; includes DHA, glucosamine, and chondroitin to promote joint health and mobility
• Made in: United States
• Guaranteed analysis:
  • Crude Protein: 26.0% min
  • Crude Fat: 14.0% min
  • Crude Fiber: 7.0% max
  • Moisture: 9.0% max
  • Phosphorus: 0.4-0.7%
  • Magnesium: 0.12% max
• Calories per cup: Approximately 425 kcal/cup
• Flavor: Chicken
• Life stage: Adult cats
• Other attributes: Grain-free, veterinary diet, supports kidney health, promotes joint mobility, contains omega-3 fatty acids, glucosamine, and chondroitin

Blue Buffalo’s Natural Veterinary Diet K+M is formulated to address kidney dysfunction and joint mobility in cats.

The controlled protein content helps manage the kidneys’ workload, while restricted phosphorus and sodium levels support renal health. 

The inclusion of DHA (an omega-3 fatty acid), glucosamine, and chondroitin aids in maintaining joint health and enhancing mobility. 

The grain-free composition caters to cats with grain sensitivities, ensuring a wholesome diet without common allergens. 

High-quality ingredients like deboned chicken provide essential amino acids, and the addition of antioxidants from blueberries and cranberries supports overall health.

This diet requires veterinary authorization, underscoring its specialized nature.

What users like

• Utilizes high-quality, real chicken as the primary protein source.
• Grain-free formulation suitable for cats with grain sensitivities.
• Includes beneficial nutrients like DHA, glucosamine, and chondroitin to support joint health.

What userse don’t like

• Limited to a single flavor option, which might not appeal to all cats.
• Higher price point compared to standard cat foods due to its specialized formulation.
• Some cats may be sensitive to certain ingredients like pea protein.
• Not suitable for kittens or pregnant/nursing cats.

Who it’s best for

• Adult cats diagnosed with early-stage kidney disease and/or those experiencing joint mobility issues. 

Purina Pro Plan Veterinary Diets NF Kidney Function Early Care 

• Weight: Each can contains 5.5 oz (156 g)
• Form: Wet food in pâté texture
• Ingredients: Water sufficient for processing, meat by-products, liver, rice, powdered cellulose, salmon, artificial and natural flavors, calcium sulfate, inulin, L-Lysine monohydrochloride…
• High nutrient: Moderate amounts of high-quality protein to support kidney function and maintain muscle mass
• Made in: United States
• Guaranteed analysis:
  • Crude Protein: 6.5% min
  • Crude Fat: 3.0% min
  • Crude Fiber: 3.0% max
  • Moisture: 77.0% max
  • Ash: 2.5% max
  • Calcium: 0.14% min
  • Phosphorus: 0.21% max
• Calories per ounce: Approximately 29 kcal/oz
• Nutrient distribution: Designed with controlled levels of phosphorus and sodium to support kidney health
• Flavor: Chicken
• Life stage: Adult and senior cats
• Other attributes: Veterinary Diet, supports kidney function, contains omega-3 fatty acids (EPA and DHA), controlled sodium levels, added B-complex vitamins and potassium

Purina Pro Plan Veterinary Diets NF Kidney Function Early Care Wet Cat Food is specifically designed for cats in the early stages of chronic kidney disease (CKD). 

The formulation includes moderate amounts of high-quality protein to help reduce the kidneys’ workload while maintaining muscle mass. 

Restricted phosphorus levels are incorporated to support kidney function and slow disease progression.

Additionally, the diet contains omega-3 fatty acids (EPA and DHA) to aid in managing inflammation and supporting overall renal health. 

Controlled sodium levels help maintain normal blood pressure, and added B-complex vitamins and potassium compensate for nutrients lost due to increased urination commonly seen in cats with CKD.

What users like

• Formulated specifically for early-stage kidney disease management
• Moderate protein content supports muscle maintenance while reducing kidney workload
• Restricted phosphorus levels to aid in slowing CKD progression
• Inclusion of omega-3 fatty acids (EPA and DHA) for anti-inflammatory benefits
• Controlled sodium levels to support blood pressure regulation
• Added B-complex vitamins and potassium to replenish nutrients lost due to polyuria

What users don’t like

• Requires veterinary authorization, which may limit accessibility
• Contains artificial flavors, which some pet owners may prefer to avoid
• Limited flavor options may not cater to all feline taste preferences
• Some cats may be sensitive to certain ingredients like meat by-products
• Higher cost compared to non-prescription cat foods

Who it’s best for

• Adult and senior cats diagnosed with early-stage chronic kidney disease (CKD). 

Purina Pro Plan Veterinary Diets NF Kidney Function Advanced Care

• Weight: Each can contains 5.5 ounces (156 grams).
• Form: Wet food in pâté form.
• Ingredients: Water, meat by-products, chicken hearts, rice, powdered cellulose, pork fat (preserved with TBHQ and citric acid), salmon, calcium gluconate, glycine, inulin, natural flavor, potassium chloride, fish oil, guar gum, potassium citrate, magnesium sulfate, salt, vitamin and mineral supplements.
• Nutrient emphasis: Reduced amount of high-quality protein and restricted phosphorus to support kidney function; contains omega-3 fatty acids, a source of EPA and DHA.
• Made in: USA
• Calories per ounce: Approximately 30 calories per ounce (1059 kcal/kg; 165 kcal per 5.5 oz can).
• Nutrient distribution: Restricted phosphorus and reduced protein levels; includes omega-3 fatty acids and antioxidants.
• Life Stage: Adult cats.

Purina Pro Plan Veterinary Diets NF kidney function advanced care wet cat food is a cat food designed to support cats with advanced kidney conditions. 

The diet contains a reduced amount of high-quality protein to help minimize the buildup of toxins in the bloodstream. 

Toxin buildup is a common issue in cats with compromised kidney function. 

In addition, restricted phosphorus levels are included to support kidney health and slow the progression of CKD.

The inclusion of omega-3 fatty acids, particularly EPA and DHA, aids in reducing inflammation and supporting overall renal function. 

Antioxidants are also present to help combat oxidative stress, which can further damage kidney tissues.

The primary ingredients, such as meat by-products and chicken hearts, provide essential nutrients while maintaining controlled protein levels. 

The addition of rice and powdered cellulose offers digestible carbohydrates and fiber, promoting gastrointestinal health. 

The pâté texture is designed to be palatable, encouraging consistent food intake in cats that may have reduced appetites due to their condition.

What users like about Purina Pro Plan

• Controlled phosphorus and reduced protein levels help reduce kidney workload while maintaining muscle mass.
• High moisture content supports hydration, which is essential for kidney health.
• Palatable texture and flavor to encourage cats with reduced appetite to eat.
• Contains omega-3 fatty acids to help support kidney function and overall well-being.

What users don’t like about Purina Pro Plan

• Some cats may not like the taste or texture, as preferences vary.
• It can be more expensive than standard commercial cat foods.

Who and what the product is best for

• Cats needing extra hydration and cats with reduced appetite.

Purina Pro Plan Vital Systems Chicken

• Weight: Each can contains 3 ounces (85 grams).
• Form: Pate.
• Ingredients: Water sufficient for processing, chicken, liver, wheat gluten, meat by-products, corn starch-modified, menadione sodium bisulfite complex (source of vitamin K activity).
• Nutrient emphasis: High in protein to support lean muscle and heart health, Contains omega-3 fatty acids for kidney health, Includes choline for brain health, Rich in antioxidants to bolster the immune system.
• Made in: United States.
• Guaranteed protein: 9% minimum.
• Calories per ounce: Approximately 74 kcal per 3-ounce can, equating to about 24.7 kcal per ounce.
• Nutrient distribution (per 3-ounce can):
  • Crude Protein: 9% minimum
  • Crude Fat: 4.5% minimum
  • Crude Fiber: 2.6% maximum
  • Moisture: 78% maximum
  • Ash: 3.5% maximum
  • Eicosapentaenoic Acid (EPA): 0.16% minimum
  • Vitamin A: 2500 IU/kg minimum
  • Vitamin E: 50 IU/kg minimum
  • Choline: 580 mg/kg minimum
  • Taurine: 0.05% minimum
• Flavor: Chicken.
• Other attributes: No artificial colors or flavors, High in protein, Contains antioxidants, Includes omega-3 fatty acids, Formulated with prebiotic fiber, Manufactured in the USA.

Purina Pro Plan Vital Systems Chicken Wet Cat Food Pate is a high-protein canned cat food formulated to provide comprehensive support for your cat’s vital systems. 

Crafted with real chicken as the primary ingredient, this pate offers targeted nutrition to promote brain, kidney, digestive, and immune health.

Purina Pro Plan Vital Systems Chicken Wet Cat Food Pate is meticulously formulated to address the comprehensive health needs of adult cats. 

Its 4-in-1 support system targets four critical areas:

• Immune Health: The inclusion of antioxidants helps neutralize free radicals, bolstering the immune system.
• Kidney Health: Omega-3 fatty acids are incorporated to support kidney function.
• Brain Health: Choline is added to promote cognitive function.
• Digestive Health: Prebiotic fiber aids in maintaining a healthy digestive tract.

The primary ingredient, real chicken, ensures a high-quality protein source that supports lean muscle mass and overall vitality. 

This wet food is free from artificial colors and flavors, aligning with a natural diet. 

Manufactured in Purina-owned facilities in the USA, it adheres to stringent quality controls.

What users like

• Comprehensive 4-in-1 health support targeting immune, kidney, brain, and digestive systems.
• High-quality protein source with real chicken as the main ingredient.
• Incorporation of beneficial nutrients like omega-3s, choline, and prebiotic fiber.
• Absence of artificial colors and flavors.

What users don’t like

• Contains wheat gluten, which may not be suitable for cats with gluten sensitivities.
• Inclusion of meat by-products, which some pet owners may wish to avoid.
• Relatively higher price point compared to some other wet cat foods.

Who it’s best for

• Adult cats seeking a balanced diet that supports multiple aspects of health. 

Honorary renal cat food mentions

Some renal cat foods didn’t make it to our list of bests, however, they have performed good enough that that deserve to be mentioned.

Our honorary mentions for renal cat food are:

• Farmina Vet Life Renal Feline Dry Cat Food
• Royal Canin Veterinary Diet Adult Renal Support A
• Royal Canin Veterinary Diet Adult Renal Support F

Farmina Vet Life Renal Feline Dry Cat Food

Farmina Vet Life Renal Feline Dry Cat Food is specifically formulated to support renal health in cats experiencing chronic or temporary renal insufficiency. 

It is formulated with high-quality proteins and reduced phosphorus levels, to reduce the kidneys’ workload. 

The inclusion of omega-3 fatty acids from fish oil supports heart health, while glucosamine contributes to joint health. 

The presence of prebiotics aids digestion, and antioxidants bolster the immune system. 

Manufactured in Italy, this diet adheres to stringent quality controls to ensure optimal nutrition for your cat.

Royal Canin Veterinary Diet Adult Renal Support A

Royal Canin Veterinary Diet Adult Renal Support A Dry Cat Food is specifically formulated to support renal function in cats with chronic kidney disease. 

It features high-quality proteins and reduced phosphorus levels to ease kidney strain. 

Omega-3 fatty acids from fish oil contribute to overall health, while balanced vitamins and minerals support bodily functions. 

The kibble’s aromatic profile and shape are designed to stimulate appetite.

Royal Canin Veterinary Diet Adult Renal Support F

Royal Canin Veterinary Diet Renal Support F is a veterinary-exclusive dry cat food designed to support feline kidney health. 

The “F” stands for “Flavorful,” indicating its highly palatable formulation aimed at stimulating the appetite of cats with decreased food intake due to chronic kidney disease (CKD).

CKD can lead to a decreased appetite and weight loss; this diet addresses these issues by being highly palatable and energy-dense, ensuring cats receive essential nutrients even with reduced food intake. 

The controlled phosphorus levels and moderate protein content help minimize kidney workload

What are the steps to follow to choose the best renal food for my cat?

Consult your veterinarian before choosing a renal diet for your cat. They can assess your cat’s kidney function, provide blood work results, and recommend the best prescription that meets your cat’s condition and overall health requirements.

Then, look out for the following;

1. Low-phosphorus and low-protein content

High phosphorus levels can accelerate kidney damage, while too much protein increases the workload on the kidneys. Look for cat renal food low in these nutrients.

2. Omega-3 fatty acids

Omega-3 fatty acids, particularly from fish oil, help reduce kidney inflammation and slow disease progression. Look for foods that contain EPA and DHA, which support kidney function and improve overall health. 

3. Moisture content

Cats with kidney disease are prone to dehydration, so wet or canned food is often preferred. A moisture-rich diet helps support hydration and kidney function. If your cat prefers dry food, ensure they have plenty of water from other sources.

4. Your cat’s taste preferences

Renal diets can be less palatable due to protein restrictions. If your cat refuses to eat, try different flavors and textures (pâté, chunks in gravy, or dry/wet food mix). Warming the food slightly or adding a vet-approved topper (like tuna water or fortiflora) can also encourage eating.

Should I add FortiFlora to my cat’s meal?

FortiFlora is a probiotic supplement by Purina that helps support gut health and digestion. It can be beneficial for cats with kidney disease, especially if they experience:

• Appetite loss: FortiFlora has a strong aroma that can encourage eating.
• Digestive issues: It helps maintain a healthy gut microbiome, which can improve stool consistency.
• Immune support: Probiotics help boost overall immunity, which is useful for cats with chronic illness.

However, FortiFlora does not replace a proper renal diet. If you’re considering adding it, consult your veterinarian to ensure it’s safe for your cat’s specific condition.

Should I add a phosphate binder to my cat’s meal?

Phosphate binders are used when dietary phosphorus restriction alone isn’t enough to control phosphorus levels. Since high phosphorus levels can worsen kidney disease, phosphate binders like aluminum hydroxide, Epakitin, or Renalzin help prevent phosphorus absorption from food.

• When to consider a phosphate binder: If your cat’s blood tests show elevated phosphorus despite a low-phosphorus diet, and your vet recommends it as part of kidney disease management.
• How to use it: Phosphate binders are usually mixed with food in powder or liquid form. They must be given at the same time as meals to be effective. Dosage is determined by a vet.

Never add a phosphate binder without consulting your vet first, as improper use can cause harm.

What do I need to know or do to care for my cat with kidney disease?

Caring for a cat with kidney disease requires long-term management. Here are five key things you can do:

• Feed a vet-recommended renal diet
• Keep your cat hydrated
• Monitor weight and appetite changes
• Provide regular veterinary checkups and bloodwork
• Minimize stress and provide comfort.

What foods help repair the kidneys in cats?

While kidney damage in cats cannot be completely reversed, some foods can help in slowing the progression of the disease. Some of these foods include veterinary-prescribed renal diets. 

Is drinking water good for cats with kidney disease?

Yes. The kidneys are responsible for filtering waste and maintaining hydration. Kidney disease reduces the ability of cats to concentrate urine, thereby leading to frequent urination and dehydration. Drinking water helps to prevent dehydration, supports Kidney function, encourages appetite, and reduces the risk of urinary issues.

Check out the best dry cat food.