Royal Canin Veterinary Diet Renal Support S Dry Dog Food

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17.6-lb bag
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This prescription item requires vet approval. Details


Royal Canin Veterinary Diet Renal Support S Dry Dog Food is an easy to digest, savory meal designed to help dogs with kidney disease. Previously labeled as Veterinary Diet Renal LP Modified Dry Dog Food, this new and improved formulation has a greater aromatic profile and tempting texture to ensure superior palatability, and even more health benefits for your dog. By enhancing nutrients like B vitamins and the fatty acids EPA and DHA, and restricting others such as protein, phosphorus, and sodium, it slows down the development of kidney problems while minimizing uncomfortable symptoms.

Key Benefits

  • Restricted phosphorus levels reduces risk of toxic build-up of phosphorus levels in blood and prevents development of secondary hyperparathyroidism
  • Low protein levels assist in limiting the production of uremic toxin
  • Unique formulation has an enhanced aromatic profile and has a savory crescent shaped kibble to ensure exceptional palatability
  • Formula maximizes energy density to help provide adequate calories for pets who have reduced food intake and reduces risk of weakness, depression and lethargy
  • Intended for intermittent or supplemental feeding only

This product requires a veterinary prescription. Simply provide your vet's information during checkout and we'll follow up to confirm the prescription, or email a copy of your prescription to and we'll get your order out right away.

See all items by Royal Canin Veterinary Diet

  • Item Number
  • Weight
    17.6 pounds
  • Brand
    Royal Canin
  • Breed Size
    All Breeds, Small Breeds, Medium Breeds, Large Breeds
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Prescription Food, Sensitive Digestion, Low-Protein

Nutritional Info


Corn, Brewers Rice, Chicken Fat, Brown Rice, Chicken By-Product Meal, Natural Flavors, Dried Plain Beet Pulp, Wheat Gluten, Fish Oil, Calcium Carbonate, Psyllium Seed Husk, Sodium Silico Aluminate, Potassium Chloride, Salt, L-Lysine, Fructooligosaccharides, Choline Chloride, Potassium Citrate, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), Biotin, D-Calcium Pantothenate, Vitamin A Acetate, Niacin Supplement, Pyridoxine Hydrochloride (Vitamin B6), Thiamine Mononitrate (Vitamin B1), Vitamin B12 Supplement, Riboflavin Supplement, Vitamin D3 Supplement, Folic Acid], Magnesium Oxide, Taurine, L-Tryptophan, Marigold Extract (Tagetes Erecta L.), Trace Minerals [Zinc Oxide, Ferrous Sulfate, Manganous Oxide, Copper Sulfate, Calcium Iodate, Sodium Selenite], Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

3,882 kcal/kg, 365 kcal/cup

Guaranteed Analysis
Crude Protein 10.5% min
Crude Protein 14.5% max
Crude Fat 16.0% min
Crude Fiber 4.0% max
Moisture 10.0% max
Phosphorus 0.39% max
Eicosapentaenoic Acid (EPA) 0.28% min
Docosahexaenoic Acid (DHA) 0.12% min

Feeding Instructions

Weight Medium Activity Daily Feeding (cup) High Activity Daily Feeding (cup)
4.4 lbs 1/2 5/8
11 lbs 1 1 1/8
22 lbs 1 3/4 1 7/8
33.1 lbs 2 1/4 2 5/8
44.1 lbs 2 7/8 3 1/4
55.1 lbs 3 3/8 3 7/8
66.1 lbs 3 7/8 4 3/8
77.2 lbs 4 3/8 4 7/8
88.2 lbs 4 3/4 5 1/2
99.2 lbs 5 1/4 5 7/8
110.2 lbs 5 5/8 6 3/8
132.3 lbs 6 1/2 7 3/8

Feeding guides are general recommendations only. The amount of food required by your dog may vary above or below that listed in this feeding guide. It is recommended that your dog be fed 2 - 4 equal portions of the diet per day.

Ensure fresh drinking water is available at all times. Store this product in a cool, dry place.

Transition Instructions

We recommend at least a 7 day transition before you begin feeding the new food exclusively. Start by mixing 75% of the old diet with 25% of the new diet on Day 1 and Day 2. On Day 3 and Day 4, mix 50% of the old diet with 50% of the new diet. On Day 5 and Day 6, mix 25% of the old diet with 75% of the new diet. On the 7th day, you can feed the new food exclusively. This allows your pet’s digestive system to smoothly adapt to the new food.


Frequently Asked Questions

How are Royal Canin diets preserved?

All of our dry diets are preserved naturally with mixed tocopherols, citric acid, and rosemary extract. Our canned diets are naturally preserved and sterilized during the cooking and canning process.

Where do the ingredients in Royal Canin diets come from?

We select our ingredients based on multiple factors, including the supplier’s compliance with our quality and food safety requirements, consistent availability, and on the nutrients required to meet the dietary needs of the pet.Royal Canin is making strides towards sustainability by attempting to obtain sources of raw materials as close to each manufacturing facility as possible. In some cases, we use international suppliers, because only those suppliers can offer raw materials that comply with our quality and food safety standards.

Why do some Royal Canin diets contain by-products?

Royal Canin chooses ingredients because they deliver high-quality nutrients that support our customized pet food formulas. Using chicken by-product meal instead of chicken meal for example will allow Royal Canin to maintain its highly customized nutrient standards while achieving a more secure and sustainable supply.

Why do some Royal Canin diets contain grains?

Grains can be a healthy part of any cat or dog’s diet. As always, we focus on the nutrients each ingredient provides and grains can provide many important nutrients.

How do you ensure Royal Canin diets are safe for my pet?

Our Quality and Food Safety systems are state-of-the-art and we continue to invest heavily in new technology to make sure they remain that way.* We put our suppliers through a rigorous selection process that doesn’t end with our first purchase.* We monitor every load delivered to our plants to verify the safety and quality of the ingredients we use to make pet food.* We perform tests on finished pet foods before they are shipped to our customers.* We manufacture every pet food we sell, in plants that we own; our plants are ISO 9001:2008 certified for Quality Management and ISO 22000 certified for Food Safety.

How do I know which Royal Canin diet is right for my pet?

Based on size, age, lifestyle, and breed, each cat or dog has unique nutritional needs. For healthy pets, use our Product Selector to find the right diet for your cat or dog.If your pet is experiencing health issues, please refer to your veterinarian for more information. Your veterinarian will consider multiple factors when recommending an appropriate diet.

Customer Reviews

133 reviews 133 Reviews 4.8 out of 5 Stars

95% Recommend

95% of reviewersrecommend this product

4.8 / 5

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  • Royal Canin Renal Support S is a hit!

    By on

    Our Vet required Jill to follow a Renal Support menu for to chronic kidney issues. She just turned 10. Since we have a 2nd Airedale who will be 11 in May, I decided both dogs would eat the same food. It's worked out beautifully. They both love the kibble. I've added Royal Canin Renal Support E wet food in the kibble and have been very pleased with the outcome. Chewy has made purchasing the food so easy and their customer service is beyond reproach. We are all very pleased and recommend the food and Chewy's without reservation!

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  • Excellent! Quick with food that requires a RX!

    By on

    We have a young dog who has kidney disease and has had to be on Royal Canine prescription food his entire life. I have gone to vets and multiple pet stores to get track down his food (it's not always easy to find) and always have to have a RX card in order to purchase. Chewy was such an EASY and fast way to get his food. I simply took a picture of my RX card, gave them our vet information and they quickly confirmed his RX and had to food shipped to us within a few days. I am signed up for monthly delivery and couldn't be happier with their service and ease of doing business with them!

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  • Kidney Relief

    By on

    Since learning of my pup’s kidney disease about 6 months ago, I’ve been searching for a food that’s gentle on her kidneys an that she’ll enjoy. Other than making food myself, she’s rejected all of the (very expensive) brands I’ve tried. Then my vet suggested Royal Canin. Man, my pup gobbles this stuff up so fast! She loves it! And it’s good for her. What more could I ask for than a healthy and happy dog?

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    By on

    Chewy is great...everyone sooooo helpful and polite (which is hard to find these days). Everything I have ordered came quickly and was super...Lucky (my wonderful dog) has loved everything I send for.....I would highly recommend your company to fact I've told a lot of friends already. At 83 it is nice to have the convenience of heavy deliveries to your door. Thank you all.

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  • Great place to get specialty dog food at a good price delivered

    By on

    Headline says it all. Oh gosh. I haven't said enough so they won't let me finish the review. Don't really care for having to give a 50 character statement when I am doing this company a favor. Next time I won't get involved in this. No stars from me. Too bad because they are my first choice.

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  • My dog gobbles this up

    By on

    These are a great size for small dogs. I add the Royal Canin canned "D" to this dry food, and my dog is a happy camper. Just the right size for a little 4 lb adorable Yorkie. Chewy was very helpful as usual, and my product came very quickly. LOVE

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  • 15 year old pup seems to like it!

    By on

    15 year old pup seems to like this food which her vet recommended instead of the grain free high protein food I’d been feeding her that is too hard on older dogs’ kidneys. : (. 4 stars only because I don’t like the smell of this food.

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  • Order for Royal Canine dog food

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    I appreciate the help in getting my prescription through to the vet for my dogs renal support food. It was delivered quickly as always. I love Chewy! Thanks so much. Diana Payte

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  • First Order For This Food

    By on

    My dog was recently diagnosed with a kidney issue. The vet recommended this brand and type of food. After searching online I was a bit surprised that Chewy was a source, a very good and cost benefit choice! What I did not know until placing the order was that a prescription was required. Chewy customer service was very helpful in working with my vet to obtain and get the product to me in a timely manner. The only reason I did not recommend this item is that I hope that others ever encounter such an issue with their dog and require this food.

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  • Renal care dog food

    By on

    Our older dog had slowly developing kidney disease u too we had to change foods (here was discontinued). The new food we got her was similar in ingredients but clearly did not agree with her. Her kidney functioning deteriorated rapidly and she was urinating all over the house. Our get recommended we switch to royal cabin renal care and we have seen a dramatic improvement. She's still 16 and her kidneys are still not fu tioning like they used to, but we all have our quality of life back :) Also, ordering through Chewy was extremely convenient and cost-effective and delivery was prompt.

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