Best Low-Protein Dog Food

Highly Recommended

One of the most commonly prescribed low-protein dog foods available. Can easily be mixed with k/d canned food.

A trusted prescription dog food that's often prescribed by vets for dogs with various health conditions such as renal failure. Contains ingredients that may increase appetite. Has only 12 percent protein and 0.3 percent sodium. Contains amino and omega fatty acids.

Veterinary Diets NF Kidney Function Dry Dog Food

Costly, and it requires a prescription from a veterinarian to purchase.

Best Bang for the Buck

Purina Pro Plan

Simple Yet Solid

Slightly less expensive than some other low protein dog foods. Has only safe ingredients.

Beyond the low levels of protein, it has low sodium and phosphorus for improved health of the dog. Has a minimum level of crude protein of 12.5 percent. Product is made in the United States, so you know you're receiving safe ingredients.

Veterinary Diet Renal Support S Dry Dog Food

Must have authorization from a veterinarian for purchase. Small dogs may not be able to chew the large pieces of kibble.

Royal Canin

Trusted Brand

One of the lowest protein levels you'll find in a dry dog food at 10.5 percent.

Formula is easy to digest, which is beneficial for older dogs. Most dogs like the aroma and taste. Recipe has limited levels of phosphorus and protein to reduce stress on the kidneys. Has enough calories to prevent lethargy.

Kidney Care k/d Canned Dog Food

Not intended to be used as the dog's only food. Requires authorization from vet.

Hill's Prescription Diet

Feature-packed

A bit pricier than dry dog food, but this canned food has extremely low levels of protein.

Made in the U.S., so you can trust the quality of the ingredients. Tastes great, so the dog will maintain its appetite. Has only 2.5 percent minimum protein levels. Uses essential amino acids to allow the dog to maintain its lean muscle mass.

Veterinary Diet Renal Support D Canned Dog Food

More expensive than most low protein dry dog foods. Requires veterinarian authorization.

Royal Canin

Most Versatile

Texture and aroma allow the dog to maintain its appetite, even with a low protein level.

Crude protein levels are between 2.5 percent and 5.5 percent. Dogs love the kibbles covered in gravy. Reduces lethargy by providing adequate calories for a dog that wants to eat less. Uses reduced phosphorus levels for kidney health.