Mastering the Renal Diet for Dogs: A Kidney-Friendly Guide

Written by: Karuna Subbiah

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Time to read 12 min

If your dog has been diagnosed with kidney disease or kidney failure, your veterinarian may recommend a renal diet or kidney support diet to help manage their condition. A renal diet for dogs is specially formulated to reduce stress on the kidneys and support their overall health.

What is the Renal Diet for Dogs?

A Vet Ready to Check the Dog

A renal diet for dogs, also known as a dog kidney failure diet, is a type of therapeutic diet designed specifically for dogs with kidney disease or renal failure. These diets are carefully balanced to provide the essential nutrients your dog needs while limiting certain compounds that can further stress or damage the kidneys.


One of the primary goals of a renal diet is to reduce the workload on the kidneys by limiting the amount of protein, phosphorus, and sodium in the food. High levels of these nutrients can contribute to the buildup of waste products in the bloodstream, which the compromised kidneys struggle to filter out effectively.

Why is Renal Diet Important for Dogs with Kidney Issues?

A Dog gets Comforted by their Owner
  1. As a dog's kidneys begin to fail, they become less efficient at performing their crucial functions, such as filtering waste products from the bloodstream, regulating fluid balance, and producing essential hormones.

  1. This can lead to a buildup of toxins in the body and an imbalance of electrolytes, which can cause a range of health issues.

  1. A renal diet for dogs helps to reduce the amount of waste products that the kidneys need to process, which can slow the progression of kidney disease and improve your dog's quality of life.

  1. By limiting the intake of specific nutrients that can be taxing on the kidneys, a kidney support diet can help to ease some of the strain on these vital organs and potentially delay the need for more invasive treatments or therapies.

What is the Difference Between a Regular Dog Diet and a Renal Dog Diet?

A Puppy Ready for Check-Up

Some dog foods are formulated to meet the nutritional needs of healthy dogs, with higher levels of protein and other nutrients to support growth, activity, and overall well-being. However, for dogs with kidney issues, these higher levels of certain nutrients can put additional strain on the already compromised kidneys.


Renal dog food is specifically designed to be easier on the kidneys while still providing essential nutrients. The protein content is typically lower and comes from high-quality, easily digestible sources, such as egg whites or low-purine animal proteins. The levels of phosphorus and sodium are also restricted, as excess amounts of these minerals can contribute to the buildup of waste products in the bloodstream.

What are the Ingredients and Nutritional Requirements for Dogs with Kidney Disease?

A Sick Dog in front of Food

What are the Ideal Ingredients of Renal Dog Food?

The Royal Canin Veterinary Diet Renal Dog Dry Food contains carefully selected ingredients that are both nutritious and easy on the kidneys. Some of the ideal ingredients for a kidney support diet include:


  1. High-quality, low-purine protein sources: These proteins are more easily digested and produce fewer waste products that the kidneys need to filter out. Examples include egg whites, low-fat dairy products, and certain types of fish or poultry.

  1. Omega-3 fatty acids : These beneficial fats can help reduce inflammation and support overall kidney health.

  1. Antioxidants: Nutrients like vitamin E, vitamin C, and certain plant compounds can help neutralize harmful free radicals and protect the kidneys from further damage.

  1. Soluble fiber: Fibers like psyllium or oat bran can help regulate blood sugar levels and aid in waste removal, reducing the workload on the kidneys.

What are the Specific Nutritional Requirements for Dogs with Kidney Issues?

The specific nutritional requirements for dogs with kidney disease or failure may vary depending on the stage of the disease and the individual dog's needs. However, in general, a renal diet for dogs should be:


  1. Restricted in protein: While protein is essential for dogs, too much can overwhelm the kidneys and contribute to the buildup of waste products. Renal diets typically contain around 14-20% protein on a dry matter basis.

  1. Low in phosphorus: Excess phosphorus can lead to the formation of mineral deposits in the body and further strain the kidneys. Renal diets aim for a phosphorus level below 0.5% on a dry matter basis.

  1. Moderate in sodium: While sodium restriction is important for dogs with kidney issues, too little sodium can also be problematic. Renal diets typically contain moderate levels of sodium, around 0.3-0.4% on a dry matter basis.

  1. Enriched with specific nutrients: Depending on the formula, renal dog foods may be supplemented with additional omega-3 fatty acids, antioxidants, or other beneficial compounds to support kidney health.

What Should Dogs With Kidney Disease Avoid?

A Puppy gets Checked-up by Vet

While formulating a kidney support diet, there are certain ingredients that are often avoided or limited due to their potential negative impact on dogs with kidney issues. These include:


  1. Plant-based proteins (corn, wheat): These protein sources can be harder for dogs with kidney disease to digest and metabolize, potentially contributing to the buildup of waste products.

  1. Meat and bone meal: While a good source of protein for healthy dogs, meat and bone meal can be high in phosphorus, which is problematic for dogs with kidney issues.

  1. Excessive amounts of salt or sodium-rich ingredients: High levels of sodium can further stress the kidneys and contribute to fluid retention and other complications.

  1. Certain preservatives or artificial additives: Some preservatives and artificial ingredients may be difficult for compromised kidneys to process effectively.

What are the Feeding Guidelines for Dogs with Kidney Problems?

A Vet Checks the Dog with a Stethoscope

How Much Should You Feed Your Dog with Kidney Troubles?

  1. Individual Needs: The amount of food for dogs with kidney issues varies based on factors like metabolism, weight, and vet recommendations.

  1. Meal Frequency: Smaller, more frequent meals are advised to prevent overwhelming the kidneys.

  1. Feeding Schedule: Dogs may be fed two to four times a day instead of one or two larger meals to regulate nutrient intake.

  1. Regulating Nutrient Intake: Multiple meals help prevent spikes in waste product levels, reducing strain on the kidneys.

  1. Monitoring Body Condition: Keep a close eye on your dog's weight and body condition to ensure they're receiving adequate nutrients.

  1. Adjusting Diet: Weight changes may indicate the need to adjust the diet or feeding amounts to meet your dog's specific needs.

What is the Renal Diet Feeding Schedule for Dogs?

  1. The frequency of feedings for dogs with kidney issues will depend on your veterinarian's recommendations and your individual dog's preferences and habits.

  1. Many veterinarians suggest feeding a renal diet for dogs two or three times per day to help regulate nutrient intake and prevent spikes in waste product levels in the bloodstream.

  1. Smaller, more frequent meals can also help prevent excessive hunger or begging behaviours, as well as potential digestive upset that can sometimes occur when larger meals are consumed less often.

  1. Providing multiple smaller meals throughout the day can help encourage water intake, which is crucial for dogs with kidney issues.

How to Monitor Your Dog’s Weight and Condition with the Renal Diet?

It's essential to monitor your dog's weight and body condition closely when feeding a renal dog food. Weight loss or gain can indicate that adjustments to the diet or feeding amounts may be needed to ensure your dog is receiving the appropriate number of calories and nutrients.


Regular body condition scoring and weight checks can help you and your veterinarian determine if your dog is maintaining an ideal weight or if adjustments to the diet or feeding regimen are necessary. Muscle wasting or excessive weight loss can be signs that your dog may require a diet higher in calories or protein, while rapid weight gain could indicate that the diet is too calorie-dense or that your dog's activity levels need to be increased.

What are Some Supplements for Dogs with Kidney Issues?

A Happy Pup in the Clinic

What Supplements To Add to Your Dog’s Renal Diet?

In addition to a carefully formulated renal diet, your veterinarian may recommend specific supplements to support your dog's kidney health and overall well-being. Some common supplements for dogs with kidney issues include:


  1. Omega-3 fatty acids: Renal Supplements with Omega-3 fatty acids , can help reduce inflammation and support kidney function.

  1. Probiotics: Probiotics Supplements help in maintaining a healthy gut microbiome can aid in nutrient absorption and overall health, which is especially important for dogs with kidney disease.

  1. Antioxidants: Compounds like vitamin E, vitamin C , and certain plant-based antioxidants supplements can help neutralize harmful free radicals and protect the kidneys from further damage.

  1. B-complex vitamins: These water-soluble vitamins in supplements play important roles in energy metabolism and overall kidney function.

  1. Phosphate binders: For dogs with hyperphosphatemia (high phosphorus levels), phosphate binders can help reduce the absorption of phosphorus from the diet, relieving some of the strain on the kidneys.

Supertails Tip: Please get your pet dog diagnosed by your veterinarian to get more tailored and recommended supplements for their condition. The prescribed supplements are helpful in the process of recovery for your pet.

What are some Benefits of Supplements to Add in the Renal Dog Diet?

A Dog with the Stethoscope

While a carefully formulated renal dog food should provide the essential nutrients your dog needs, supplements can help provide additional support and potentially slow the progression of kidney disease. Some of the potential benefits of supplements for dogs with kidney issues include:


  1. Reduced inflammation and oxidative stress: Antioxidants and omega-3 fatty acids can help neutralize harmful free radicals and reduce inflammation, both of which can contribute to kidney damage.

  1. Improved nutrient absorption: Probiotics and certain vitamins and minerals can aid in the proper absorption and utilization of nutrients from the diet.

  1. Support for kidney function: Specific compounds like phosphate binders or B-complex vitamins can help support the remaining kidney function and alleviate some of the strain on these vital organs.

  1. Potential slowing of disease progression: By providing additional support and reducing inflammation and oxidative stress, supplements may help slow the progression of kidney disease in some cases.

It's important to note that not all supplements are appropriate for dogs with kidney issues, and some may even be contraindicated. Always consult with your veterinarian before adding any supplements to your dog's diet, as they can help determine the appropriate dosages and formulations for your dog's specific needs.

How to Manage Hydration and Water Intake in Dogs with Kidney Issues?

A Dog Getting Vet-Approved Medication

To help ensure your dog with kidney issues stays properly hydrated, it's essential to encourage regular water intake. Here are some tips to help increase your dog's water consumption:


  1. Offer fresh, clean water at all times: Make sure your dog has access to fresh, cool water throughout the day, and clean and refill their water bowls regularly.

  1. Use water fountains or bowls with circulating water: The movement and sound of flowing water in a water fountain or changing water bowls can often encourage dogs to drink more.

  1. Add low-sodium broth or water to their food: Mixing in a small amount of low-sodium broth or plain water can make your dog's food more appealing and increase their overall fluid intake.

  1. Provide ice cubes or frozen treats: Many dogs enjoy licking or chewing on ice cubes or frozen treats made with low-sodium broth or water, which can help increase their hydration levels.

  1. Consider switching to a wet or moistened food: The moisture content in wet food or moistened kibble can help contribute to your dog's overall fluid intake.

How to Monitor and Adjust the Renal Diet for Dogs

A Vet writes down Symptoms

Regular Vet Check-ups

  • It is essential for monitoring kidney function and overall health.

  • It Involves physical examination and diagnostic tests.

  • Vet can discuss with you about changes in appetite, energy levels, etc. that may indicate need for diet adjustments.

  • This allows the vet to track disease progression and make treatment plan adjustments.

  • This may include modifications to renal diet or supplementation.

Blood and Urine Tests

  • This provides valuable info about remaining kidney function

  • Blood tests measure waste product levels like creatinine and BUN

  • It helps determine if protein/phosphorus levels in diet need adjustment

  • Urine tests check concentration of waste products and compounds

  • Tests can detect issues like protein in urine or dilute urine

  • Vets can guide necessary dietary modifications or additional treatments

Adjusting the Diet as Needed

As kidney disease progresses or needs change, diet adjustments may be required. Potential adjustments include:


  • Changing protein or phosphorus levels in food

  • Adding or adjusting supplement dosages (e.g., phosphate binders, omega-3s, antioxidants)

  • Incorporating other dietary changes (sodium, calories, specific nutrients)

  • It is extremely Important to follow vet's recommendations

  • Regular monitoring and appropriate diet changes can slow disease progression

To Conclude

A Sick Pup Sleeping with its Owner

At the end of the day, feeding the right renal diet is one of the most important things you can do to support your pup's health if they are dealing with kidney disease or kidney failure. While it may take some adjustments, sticking to a kidney-friendly menu can truly make a world of difference for your furry friend.


By limiting protein, phosphorus, sodium and other potential stressors, while supplying essential nutrients, a proper renal diet gives those hard-working kidneys a much-needed break. And with recommendations for supplements, hydration, and regular monitoring from your trusted vet, you'll have all the tools to help manage your pup's condition.


Remember, you've got this! With patience, love, and your vet's guidance, you can absolutely crush this kidney-diet game. Your devotion to finding the perfect kidney-pampering chow is a true testament to your bond with your beloved fur baby. Keep being an outstanding dog parent, and your pup will keep thriving – one nutritious, kidney-friendly nibble at a time!

FAQs

A Puppy being Diagnosed

Is Chicken Bad for Dogs with Renal Disease?

High-protein foods should generally be avoided for dogs with kidney disease. However, lean chicken that is boiled or baked without added salt or seasonings may be acceptable in moderated portions as part of a renal diet, upon consultation with your veterinarian.

What Can I Cook for my dog who has kidney problems?

It is better to stick to a prescribed renal or kidney support diet formulated by veterinary nutritionists to meet the specific needs of dogs with kidney disease. However, some low-protein, low-phosphorus, low-sodium options like cooked plain rice or boiled vegetables could potentially be incorporated in small amounts if approved by your vet.

What foods Help Repair Kidneys in Dogs?

Unfortunately, there are no specific foods that can repair or reverse kidney damage in dogs. A restricted renal diet to reduce the workload on the kidneys and potentially slow the progression of disease. Key components are limiting protein, phosphorus, sodium while providing essential nutrients.

Can Dogs' Kidneys recover?

In some cases of acute kidney injury, if the underlying cause is treated early enough, the kidneys may recover some function. However, chronic kidney disease is generally irreversible and progressive. A renal diet aims to manage the condition by supporting remaining kidney function for as long as possible.


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