Blue Buffalo Natural Veterinary Diet K+M Kidney + Mobility Support Grain-Free Dry Cat Food, 7-lb bag

By Blue Buffalo Natural Veterinary Diet
Rated 4.4108 out of 5 stars
Veterinary Diet Item
$51.98Chewy Price
$49.38Autoship Price
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This item requires vet authorization.

About This Item


  • Kidney support canned cat food with controlled levels of protein to help manage your furry pal’s kidney workload.
  • Veterinary diet that also has controlled levels of phosphorus and sodium to help support kidney health for a happy and thriving cat.
  • Enhanced with DHA, glucosamine and chondroitin to support your pal’s healthy joint function and overall mobility.
  • Made without the grains many pet parents choose to avoid, making this holistic formula great for cats with sensitive tummies.
  • Prescription-only food made with the finest ingredients available that have both beneficial nutrition and a taste your furry best friend will love.

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Nutritional Information

Feeding Instructions


Play Video: Learn More About Blue Buffalo Natural Veterinary Diet From Our Team of Experts
Learn More About Blue Buffalo Natural Veterinary Diet From Our Team of Experts

Frequently Bought Together

About BLUE Natural Veterinary Diet®

A Natural Therapeutic Diet

Formulated by veterinarians and animal nutritionists, BLUE Natural Veterinary Diet products are designed to nutritionally help manage certain conditions for dogs and cats. BLUE Natural Veterinary Diet formulas contain the same kind of premium-quality ingredients that are synonymous with Blue Buffalo.

The True BLUE Promise

BLUE is formulated with only the finest natural ingredients:

• Always features protein-rich real meat

• NO chicken (or poultry) by-product meals

• NO corn, wheat or soy

A Holistic Approach to Nutritional Therapy


Because the efficacy of nutritional therapy is top priority, BLUE Buffalo employs a team of PhD animal nutritionists, food scientists and veterinarians to ensure each BLUE Natural Veterinary Diet performs exactly as it should.


At BLUE Buffalo, product safety and quality are our #1 priority. We care deeply about the safety of our furry family members. We are proud of our best-in-class product quality, and have strict controls in place to make sure that our ingredients meet the highest quality standards.


BLUE Natural Veterinary Diet is made with the finest natural ingredients just like all our BLUE foods. It always starts with REAL MEAT and contains NO chicken/poultry by-products, corn, wheat or soy and artificial preservatives, or flavors. It's a wholesome, natural veterinary diet that has both beneficial nutrition and a taste cats love.

Exclusive LifeSource Bits®

All BLUE Natural Veterinary Diet recipes feature a precise blend of vitamins, minerals and antioxidants selected by holistic veterinarians and animal nutritionists to help promote immune system health, fulfill life stage requirements and support a healthy oxidative balance.

About BLUE Buffalo

Blue Buffalo began with unconditional love and some furry inspiration from a large breed Airedale, Blue. When Blue's family started a pet food company, their vision was clear. They wanted every pet parent to be able to feed their pet with the same care they would feed family. So they created the #1 natural pet specialty food to help furry family members live happy, healthy lives. Of course, they named it after Blue.

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Top IngredientsDeboned Chicken, Peas, Pea Starch...Brewers Rice, Corn Gluten Meal, Chicken Meal...Brewers Rice, Hydrolyzed Chicken Liver, Rice Protein Concentrate...Deboned Chicken, Chicken Meal, Tapioca Starch...Deboned Chicken, Chicken Meal, Pea Protein...
Special DietGrain-Free, No Corn No Wheat No Soy, Veterinary Diet, NaturalVeterinary Diet, Weight Control, Pea-Free, With GrainVeterinary Diet, Pea-Free, Hydrolyzed Protein, With GrainGrain-Free, No Corn No Wheat No Soy, Sensitive Digestion...Grain-Free, No Corn No Wheat No Soy, Veterinary Diet...
Food FlavorPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, ChickenPoultry, Chicken
Health FeatureHip & Joint Support, Kidney CareDigestive Health, Weight ManagementSkin & Coat HealthDigestive HealthUrinary Tract Health, Weight Management
Food FormDry FoodDry FoodDry FoodDry FoodDry Food

Questions & Answers

10 Customer Questions

My male Sphynx is 4 yrs old and has been on the W/U veterinary diet for several years now. What is the difference in the W+U diet and the K+M diet ?

what is the dry matter % of phosphorous?
Answer by ChewyDec 18, 2019
This food has a phosphorus content of 0.7% on an as-fed basis, and 0.769% on a dry matter basis.

what are the levels of carbohydrates, calcium, protein, and magnesium on a dry matter basis?
Answer by ChewyJan 09, 2020
This variety contains approximately 39% Carbohydrate content on an as-fed basis (42.8% on a dry matter basis), 0.5-0.9% Calcium content on an as-fed basis (0.54-0.98% on a dry matter basis), 26% Protein content on an as-fed basis (28.5% on a dry matter basis) and 0.12% Magnesium content on an as-fed basis (0.13% on a dry matter basis).

How is this mobility support?
Answer by ChewyAug 26, 2020
This grain-free formula has controlled levels of minerals, such as phosphorus and sodium to help support kidney health, plus vital nutrients such as DHA, glucosamine, and chondroitin to support your cat’s healthy joint function and overall mobility. We suggest running this diet by your veterinarian since we require authorization before dispensing it.

ReviewsWrite a Review

Rated 4.4108 out of 5 stars
185 Ratings
Would recommend to a friend

182 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 5 out of 5 stars
By JR on Nov 13, 2023


One of my cats has recently been diagnosed with kidney disease. I've tried 2 other prescription foods and he would eat them but very reluctantly. He was always a hardy eater until his diet had to be changed. Each time I've changed his food, I would wait 2-3 weeks to give him time to adjust. The final straw was when he was consistently leaving 1/3 of his serving daily. Thankfully, he loves this food; he eats every piece! I want to thank the wonderful customer service representative who went out of her way to get the approval needed from the veterinarian. She even called me back to let me know the order was being processed. The next day, my cat was enjoying his food! My only regret is that I didn't write down the name of this customer service representative....she was exceptional.

Rated 5 out of 5 stars
By Cjean55 on Sep 29, 2023


My older cat has the beginning stages of kidney disease so a prescription diet was recommended by my veterinarian. I tried a different brand of prescription diet product for the cat which he had a hard time liking so I also had to give him a appetite stimulant to make him eat enough so he wouldn't lose weight. I wanted to try something else hopefully that he would like so I switched to this Blue Buffalo k and M dry prescription diet and he absolutely loves it he goes through two bowls a day now with no appetite stimulant and has gained a few more ounces which is great since he's 17 years old. So I definitely will be buying this product again.

Rated 5 out of 5 stars
By Edna on Oct 3, 2023

My cat loves dogs are even fighting over it.

I think this food provides a lot that more traditional Kidney prescription diets do not offer. It has wonderful ingredients, and also addresses joint mobility...a bonus for sure. My cat, normally indifferent to food, fell on his first bowl with an appetite I haven't seen in a long time. Every bowl I have set out, he approaches with the same enthusiasm. The dogs (just about his size) circle around, hoping for a chance at the bowl or, at the very least, any of the tiny, tasty kibble he has left on the floor. It's "an event" when I fill the cat bowl now.

Rated 5 out of 5 stars
By Patricia on Nov 11, 2023

We would do anything for Mittens

The vet prescribed this special cat food for Mittens. I have never dealt with Chewy but my daughter recommended it as she uses the website to order items for her dog and cat. It was quick and easy to use and arrived on time. Thank you

Rated 5 out of 5 stars
By Deborah on Nov 5, 2023

Great Kidney Cat Food

My cat was prescribed Kidney cat food and we first tried Hills k/d Kidney Care. My cat basically starved himself rather than eat that food. I did some research and discovered that many cats prefer Blue Buffalo. My cat rushes to eat this dry food. I highly recommend it.

Rated 5 out of 5 stars
By Courtney on Sep 18, 2023

Cheesecake Approved!

Started our 8 year old adopted girl on this food since we caught early kidney disease in her. Since we’ve only had her for a year it’s been hard to figure out what she likes and what her temperament is like when she’s feeling good and since switching her to this food she’s like a kitten again! Thanks blue Buffalo and chewy!

Rated 5 out of 5 stars
By Tamara on Oct 22, 2023

My cat loves this

We were already on Blue brand dry food when our cat was diagnosed with Stage 2 Kidney disease. The Blue Buffalo Veterinary diet smells great to him, and he gobbles it up. Thank you for making this an easy transition.

Rated 5 out of 5 stars
By AshNoel86 on Aug 1, 2023

Geriatric Cat Loves It!

Our 19 year old Persian loves this food and we’ve seen such an improvement in him since we started it. We originally were feeding him Royal Cabin’s Kidney food but it was out of stock everywhere so I tried this food instead. He went from hiding under the bed most of the day to being around us all the time again. He moves so much better and hardly stumbles at all which was frequent before. He is also using a ramp to get on the bed which he never did before. We had his kidney levels tested and in a year they’ve barely changed. I absolutely recommend this food!

Rated 2 out of 5 stars
By Tootsie on Sep 28, 2023

Not so much

It can be challenging to find the right food for a senior cat with some health issues. She liked some bites of this first couple days, but since then it just sits and has not been palatable for her.

Rated 4 out of 5 stars
By Joseph on Oct 13, 2023

She liked it

I read some reviews and was very worried that my cat would not like, but she definitely did. It's a high price to pay, but she's all I have.