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Medicus Kidney Support Diet For Cats

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Veterinary Authorization Required. This diet requires veterinary authorization. Submit authorization or provide your veterinarian's contact information. How it works ▾

A vet-formulated, whole-food kidney support cat food thoughtfully designed to provide gentle, targeted, kidney-conscious nutrition.

Why Medicus? Top benefits

When a pet’s needs become more complex, nutrition matters most. Scientific evidence and clinical experience support the use of whole-food nutrition to provide meaningful, targeted nutritional support.

• Whole-Food Nutrition: Responsibly sourced animal proteins, healthy fats, and whole-food ingredients form the foundation of every Medicus diet.

• Precisely Formulated: Each diet is carefully formulated with specific nutritional goals, guiding both nutrient levels and ingredient selection.

• Vet Developed, Nutritionist Reviewed: Developed in collaboration with independent veterinary specialists and nutrition consultants, with every batch undergoing rigorous testing to ensure safety, consistency, and traceability.

• Freeze-Dried for Nutritional Integrity: Freeze-drying allows Medicus to produce safe, shelf-stable food while preserving the natural nutritional integrity of whole-food ingredients.


Size:

Size

Form:

Form

100% Quality Guarantee

Diet Overview

The Medicus Kidney Support Diet is formulated to provide kidney-conscious nutrition for cats with renal disease who benefit from controlled mineral intake.
Built with highly digestible proteins, carefully balanced minerals, and whole-food ingredients selected for thoughtful nutrient delivery, this recipe helps nourish the body while maintaining an appropriate mineral profile. Intended for use under veterinary guidance.

Highlights

• Highly digestible, quality animal proteins
• Controlled phosphorus levels
• Whole-food ingredients that help naturally moderate mineral absorption
• Balanced potassium levels
• High levels of B vitamins
• Omega-3 fatty acids (EPA + DHA)
• Available in nugget and paté formats to support palatability and feeding flexibility

Who would benefit from this diet?

• Cats with kidney or renal disease who benefit from controlled phosphorus and mineral levels
• Cats with conditions requiring low dietary phosphorus
• Cats whose veterinarian has recommended a kidney-support or renal diet

How It Works

The Medicus Kidney Support Diet For Cats is meticulously crafted to address these key nutritional needs:

Nourishes the Body with Clean, Whole Foods

Nourishes the Body with Clean, Whole Foods

• Moderate levels of high-quality protein from meat and organs
• Moderate levels of healthy, digestible fats
• Antioxidant-rich produce
Reduces Dietary Phosphorus Load

Reduces Dietary Phosphorus Load

• Low-phosphorus ingredients help support balanced mineral intake
• Whole-food calcium sources, such as egg shells and chitosan, help naturally limit phosphorus absorption in the digestive tract
Replenishes Key Nutrients That May Be Depleted

Replenishes Key Nutrients That May Be Depleted

• Added potassium and B vitamins help maintain normal nutrient balance
• Supports everyday hydration-related nutrient turnover
Supports Renal Health with Targeted Fatty Acid Balance

Supports Renal Health with Targeted Fatty Acid Balance

• Omega-3 fatty acids provide EPA + DHA
• Balanced Omega 6: Omega 3 ratio of 0.67:1
• Formulated to support the body’s natural inflammatory response

Ingredients

Chicken, Rice, Egg, Chicken Liver, Flaxseed, Chicken Gizzards, Ground Krill, Cranberries, Blueberries, Potassium Chloride, Sea Salt, Egg Shell, Chitosan, Mixed Tocopherols, Zinc Proteinate, B Vitamins
Chicken

Chicken

Fresh, clean chicken supplies highly digestible protein, a cornerstone of feline nutrition, while contributing essential amino acids in a form that is easy to utilize and supportive of gentle, kidney-conscious feeding.

Rice

Rice

Rice is included intentionally as a gentle, easily digested source of energy with a naturally lower phosphorus contribution. In kidney-conscious nutrition, this helps support balanced mineral intake while providing steady, accessible calories.

Egg

Egg

Egg is a complete, highly digestible protein containing all nine essential amino acids. Its naturally lower phosphorus level makes it especially valuable when thoughtful mineral balance is a priority.

Chicken Liver

Chicken Liver

 A nutrient-dense organ meat that supplies essential vitamins and micronutrients in small amounts, supporting complete nutrition without increasing overall food volume.

Flaxseed

Flaxseed

Flaxseed provides fiber and naturally occurring plant compounds that support normal digestion and nutrient utilization, helping the body make the most of every bite.

Chicken Gizzards

Chicken Gizzards

Adds additional whole-food protein and texture while contributing bioavailable nutrients that cats and dogs instinctively recognize and digest easily.

Ground Krill

Ground Krill

Ground krill supplies marine-sourced omega-3 fatty acids including EPA and DHA, along with naturally occurring astaxanthin, to support a balanced inflammatory response and overall wellness.

Cranberries

Cranberries

Traditionally included in urinary-support diets, cranberries supply antioxidants and plant compounds that help support normal urinary tract health.

Blueberries

Blueberries

Rich in antioxidants and phytonutrients, blueberries help support the body’s normal response to everyday oxidative stress as part of a nutrient-dense, kidney-conscious diet.

Potassium Chloride

Potassium Chloride

Used as an electrolyte replenisher to ensure adequate potassium levels last during GI upset. 

Sea Salt

Sea Salt

Provides sodium and chloride to help maintain hydration and electrolyte balance as part of a moisture-supportive feeding routine.

Egg Shell

Egg Shell

The shell provides a whole food calcium source, and the membrane lining offers collagen, chondroitin, hyaluronic acid, and glucosamine.

Chitosan

Chitosan

Chitosan is derived from the outer shells of shellfish such as lobster and crab. In this recipe, it works alongside other whole-food ingredients to help support balanced phosphorus levels as part of the overall mineral design.

Mixed Tocopherols

Mixed Tocopherols

Part of the vitamin E family (akin to vegetable oil) & often used as a natural preservative to maintain freshness.

Zinc Proteinate

Zinc Proteinate

A chelated mineral bound to an amino acid that protects against oxidative stress and supports nutrient utilization.

B Vitamins

B Vitamins

Niacin, Riboflavin, Thiamine, Vitamin B12, Pyridoxine, and Folic Acid are incredibly fragile B vitamins. They help a variety of enzymes do their jobs, so food more easily turns into energy in the body.

Our Standards

Click on a standard to read more.

100% real food
No Meat Meals
100% real food

Made from real, whole-food ingredients rather than rendered meals or heavily processed powders. Whole foods provide nutrients the body can efficiently digest, absorb, and utilize.

No Meat Meals

Rendering converts animal carcasses into ingredients for animal feed. They are ground, heavily cooked, pressed to remove fats, ground again, and then dried. Included in this process are bones, organs, blood, feathers, and slaughter floor waste. Meal is a heavily processed ingredient before it’s added to kibble.

Locally Sourced Ingredients
No High-Heat Cooking
Locally Sourced Ingredients

Responsibly sourced from trusted suppliers who prioritize ingredient quality and safety. This sourcing approach allows us to select ingredients such as organically grown produce, wild-caught fish, and pasture-raised beef.

No High-Heat Cooking

Avoids high-temperature processing that can degrade proteins, fats, and sensitive nutrients.

Carefully Selected Whole-Animal Meats
No Corn
Carefully Selected Whole-Animal Meats

Uses digestible animal proteins that provide essential amino acids to support muscle maintenance, skin integrity, immune function, and metabolic health.

Our formulas do not include corn or corn-derived ingredients. Instead, we use whole-food carbohydrate sources selected for their digestibility and nutritional contribution to the overall formulation.

Organic Produce
No Antibiotics
Organic Produce

Pesticide exposure can increase oxidative stress and place unnecessary strain on the body. When available, we prioritize organically grown produce in our formulas. This means ingredients are grown without synthetic pesticides or herbicides, supporting cleaner, more natural nutrition from the ground up.

Because we source meat from trusted partners who follow responsible animal-raising practices, no antibiotics, hormones, or other medications are administered to the animals prior to slaughter. This helps preserve the integrity of the ingredients used in our formulas

Freeze-Dried
No Byproducts
Freeze-Dried

Freeze-drying removes moisture while preserving the original nutrient profile and digestibility of whole foods without high-heat processing.

No Byproducts

Byproducts are the result of whole foods being broken down into smaller parts, like peas being broken down into pea protein, pea flour, pea fiber, and pea starch. This allows pet food companies to list these as separate ingredients on their ingredient decks.

Veterinarian Developed
No Hormones
Veterinarian Developed

Developed by a veterinarian using whole-food ingredients and nutritional science to support specific physiological functions through purposeful nutrition.

No Added Hormones or Routine Antibiotics

Because we source meat from trusted partners who follow responsible animal-raising practices, no antibiotics, hormones, or other medications are administered to the animals prior to slaughter. This helps preserve the integrity of the ingredients used in our formulas.

Independently Reviewed
No Artificial Preservatives
Independently Reviewed

Each formulation undergoes independent review to verify ingredient safety, nutrient balance, and formulation integrity.

No Artificial Preservatives

We only use mixed tocopherols, a natural preservative, in all Medicus Diets. While it functions as a way to keep each bag of food shelf-stable and fresh, it is also an antioxidant.

Made in WI
No Artificial Flavoring
Made in WI

Dr. Chris Bessent is the owner and operator of the Wisconsin-based facilities where Medicus is made. This gives her the ability to provide strict oversight of every step of the production phases, from when the ingredients enter the facility to when the finished food leaves the facility for delivery to your door. Every ingredient, each production phase, and every batch of food is logged for complete traceability.

No Artificial Flavoring

Because all of our ingredients are freeze-dried, the original flavor remains, making it similar to a fresh or home-cooked diet in taste.

Limited Ingredient
No Artificial Dyes
Limited Ingredient

Limited-ingredient formulations help support digestibility and enable more precise nutritional formulation for sensitive systems.

No Artificial Dyes

Artificial dyes are used in pet foods to add color to brown kibble in an attempt to give them a more desirable and aesthetically pleasing color.

Antioxidant-Rich
No Cellulose
Antioxidant-Rich

Each Medicus formula contains naturally occurring antioxidants, including polyphenols from blueberries, carotenoids from spinach, and astaxanthin from krill. Antioxidants help protect cells from oxidative stress.

No Cellulose

Does not include non-nutritive bulking agents or filler ingredients like cellulose.

Rich in Omega-3 Fatty Acids
No Soy
Rich in Omega-3 Fatty Acids

Omega-3 fatty acids support normal immune function, cardiovascular health, skin integrity, and renal physiology. Medicus formulas are uniquely formulated to provide an approximate 1:1 Omega-6 to Omega-3 ratio using whole-food sources, a balance that differs significantly from conventional pet foods.

No Soy

No soy or soy-derived ingredients. Soy is often used as a concentrated plant protein, but we instead rely on whole-food animal proteins and complementary ingredients to provide complete amino acid profiles and balanced nutrition.

3rd-Party Tested
No Brewers Rice
3rd-Party Tested

Each Medicus diet went through complete, comprehensive 3rd-party testing. Several rounds of AAFCO Nutrient Profile testing ensured that both macro- and micronutrient levels are meeting your pet’s specific nutritional needs.

No Brewers Rice

Many kibble diets contain brewers rice, a byproduct of white rice processing. We use whole white rice selected for digestibility and nutritional contribution.

Minimally Processed
No Wheat
Minimally Processed

Prepared using gentle processing methods that preserve whole-food structure, digestibility, and nutrient availability.

No Wheat

Wheat is commonly used as a filler by commercial kibble companies because it is inexpensive and readily available. Wheat is used as a plant-based protein and isn’t as digestible or bioavailable for carnivores.

Bioavailable Proteins
No Feed-Grade Ingredients
Bioavailable Proteins

Uses protein sources the body can efficiently digest, absorb, and utilize for tissue maintenance and metabolic function.

No Feed-Grade Ingredients

Uses ingredients selected for safety, digestibility, and nutritional integrity.

Ingredients

Chicken, Rice, Egg, Chicken Liver, Flaxseed, Chicken Gizzards, Ground Krill, Cranberries, Blueberries, Potassium Chloride, Sea Salt, Egg Shell, Chitosan, Mixed Tocopherols, Zinc Proteinate, B Vitamins

Cups in a Bag

Nuggets

96.88 g/cup | 4 2/3 cups

Calorie Content

Nuggets

4227 kcal/Kg | 409.5 kcal/cup

Guaranteed Analysis

Crude Protein (min.) 30%

Crude Fat (min.) 15%

Crude Fiber (max.) 6%

Moisture (max.) 5%

Supplemental Feeding

The Medicus Kidney Support Diet For Cats is intended for intermittent or supplemental feeding only.

Nutritional Facts

How to Feed

Feeding Guide

Use only as directed by your veterinarian. Medicus Veterinary Diets provide intentional nutritional support for pets with more complex needs. Feeding amounts and duration should be adjusted based on your pet's response. Always provide access to fresh water.

Rehydration Recommended

Nugget Rehydration Directions: Rehydrate by adding +/- ¾ cup of warm water for every cup of food. Mix the water and food, and wait 3-4 minutes, then serve.

Paté Rehydration Directions: Add 1 1/2 cups of hot water (120 degrees F) for every 1 cup of Medicus pate powder. Mix and let rest for 5-10 minutes. Prior to serving, add two additional tablespoons of warm water and mix.

Feeding Chart - Nuggets
Feeding Chart - Paté
Lifestyle Photo

Tested. Trusted. Vet-Approved.

Tested. Trusted. Vet-Formulated.

Real ingredients. Thoughtful formulation.

Medicus diets use whole animal proteins, organ meats, and carefully chosen produce, preserved through freeze-drying to maintain their natural nutritional integrity.

Across our Foundation, Targeted, and Veterinary diets, every formula is developed by a veterinarian and independently reviewed by veterinary professionals.

cGMP Certified Facility

Made in our own facility under veterinary oversight. Every batch meets the highest safety and quality standards—because your pet deserves nothing less.

Responsibly Sourced

We partner only with cGMP-compliant suppliers committed to sustainability and conservation. Trust but verify—it's our promise to you.

Frequently Asked Questions

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