Feline Renal Support A Dry Cat Food
Verified Jun 8, 2026
This is a veterinary prescription dry diet formulated specifically for adult cats with chronic kidney disease. It provides controlled, moderate protein, low phosphorus, and added omega-3 fatty acids from fish oil to help support kidney function, in a relatively energy-dense kibble to help maintain weight even when appetite is reduced. The recipe uses rice, corn, and gluten-based proteins along with chicken by-product meal and added fiber sources to balance nutrient needs for cats with kidney issues.
Nutritionally, this is a well-designed renal prescription diet for adult cats living with chronic kidney disease. It offers appropriately reduced but good-quality, highly digestible protein along with low phosphorus and added omega-3 fatty acids, which are key goals in kidney support nutrition. It’s best suited for cats who have been diagnosed with kidney disease and are being managed under veterinary supervision, especially those who need a more energy-dense, palatable kibble to help maintain weight.
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At a Glance
KibbleLab Review
Strengths
- Formulated with controlled, moderate protein and low phosphorus, which are central nutritional strategies for supporting cats with kidney disease.
- Includes fish oil providing EPA and DHA, plus added antioxidants like vitamins E and C to help support overall cellular health.
- Energy-dense kibble (high calories per cup) can help cats maintain weight when their appetite is reduced, a common issue in kidney disease.
- Uses a mix of highly digestible carbohydrate and protein sources (rice, corn, gluten, chicken by-product meal) that generally provide good nutrient availability for cats with compromised kidneys.
Considerations
- Contains chicken by-product meal, wheat gluten, corn gluten meal, and soy protein isolate, so it is not appropriate for cats with known sensitivities or allergies to chicken, wheat, corn, or soy proteins.
- Protein is intentionally on the lower side compared with standard adult cat foods; that’s usually beneficial for kidney disease but may not be ideal for healthy cats, so it should be used only when your veterinarian recommends it.
- Dry formulations provide less moisture than wet renal diets, so some cats with kidney disease may still benefit from additional water intake or combination feeding with a renal wet food.
Full Ingredient List
Ingredients and analysis reflect manufacturer data at the time of our last update and can change without notice. Always check the actual product packaging before feeding.
Ingredient filtering helps identify compatible options but is not a substitute for a veterinary elimination diet.
Top 5 Ingredients Explained
01
Brewer's Rice
Brewer’s rice is a milling byproduct of rice processing made up of small broken white rice kernels commonly used in pet foods as a highly digestible carbohydrate source, filler and binder that provides readily available energy for dogs and cats while contributing little protein, fat or fiber. It is generally gentle on the stomach and cost‑effective, but diets using it must supply other ingredients for essential nutrients; pet owners should note its relatively high glycemic load (relevant for weight or diabetic pets), the potential for trace environmental contaminants associated with rice, and not confuse it with brewer’s yeast.
02
Corn
Corn is commonly used in dog and cat foods as a digestible source of carbohydrates and calories, and it also provides some plant protein, fiber, B vitamins and minerals while helping with kibble structure and palatability. While generally safe and economical, corn is relatively high in starch and has an incomplete amino acid profile for obligate carnivores (cats), can be a source of mycotoxin contamination if poorly stored, and although true corn allergies are uncommon, some pets may be sensitive, so quality and proper formulation with animal proteins are important.
03
Chicken Fat
Chicken fat is used in dog and cat foods as a concentrated energy and flavor source that supplies essential fatty acids (notably linoleic acid) and aids absorption of fat‑soluble vitamins, improving palatability and supporting skin and coat health. Because it is calorie‑dense, diets must account for added fat to prevent weight gain, and quality (proper rendering and antioxidant protection to prevent rancidity) is important; although fats are less commonly allergenic than proteins, pets with poultry sensitivities may still react in some cases.
04
Wheat Gluten
Wheat gluten is a concentrated plant protein commonly used in dry pet foods as a protein booster, binder and texture improver to help form kibble and extend meat-based ingredients. It provides digestible protein for dogs and cats but is low in certain essential amino acids (notably lysine) and lacks animal-specific nutrients like taurine, so it should not be the sole protein source; pets with wheat or gluten sensitivities may also experience allergic or gastrointestinal reactions.
05
Corn Gluten
Corn gluten (often listed as corn gluten meal) is a concentrated plant-based protein and kibble-binding ingredient commonly used in dry pet foods to boost protein content, energy density, and help with texture. It provides digestible protein for dogs but is relatively low in essential amino acids like lysine, is not an ideal sole protein source for obligate carnivores such as cats, and can be a sensitivity/allergen for some pets, so it’s best used alongside high-quality animal proteins and complementary ingredients.
Nutritional Breakdown
How to read As Fed versus Dry Matter
As fed shows the numbers straight off the label, water included. Dry matter removes the water so you can compare a wet food and a dry food fairly.What is calorie density
How many calories the food packs per unit. Denser foods mean smaller portions for the same calories.Product Details & Brand
Product Specs
Brand
Royal Canin is a premium pet food brand offering highly specific diets tailored to different breeds, life stages, sizes, and health conditions of dogs and cats. The brand is known for its science-driven approach and collaboration with veterinarians and pet professionals.
Visit Royal CaninWSAVA publishes criteria for evaluating a manufacturer (qualified nutritionists, feeding trials, published research); it does not certify or endorse brands.
Manufacturer
Royal Canin operates manufacturing facilities globally with strict quality control processes and adheres to ISO certification standards. The company maintains full traceability of ingredients, follows HACCP principles, and complies with local and international pet food safety regulations including EU and FDA requirements.
Manufacturing details are compiled from public sources and not independently verified; they may not reflect contract manufacturing or co-packing.
Recall History
Royal Canin Feline Renal Support A Dry Cat Food has no recalls since 2014.
Source: FDA Pet Food Recall Database · Monitored daily
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Frequently Asked Questions
Has Royal Canin ever been recalled?
We have no recalls on record for Royal Canin. We monitor the FDA Pet Food Recall Database daily.
How does KibbleLab rate foods?
Our scores are based on ingredient composition, nutritional profile, AAFCO compliance, and health considerations. We don't penalize by-products, grains, or synthetic preservatives. Brands cannot pay for higher scores.
Is KibbleLab a substitute for veterinary advice?
No. KibbleLab provides data-driven food analysis, not medical advice. Always consult your veterinarian before making dietary changes, especially for pets with health conditions.
KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.
KibbleLab may earn affiliate commissions through product links. No one can pay for a higher score, or to change what we recommend for your pet.
Product data sourced from manufacturer websites, AAFCO statements, and FDA recall database. Last verified dates reflect our most recent data check.
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