For example, dogs who suffered from kidney disease and were fed a prescription kidney diet lived longer than dogs fed regular kibble. (happytailsspa-blog.com)
Low protein kidney diets also contain added vitamin B supplementation to try to make up for the loss of B complex that results with failing kidneys. (dogcare.dailypuppy.com)
There are other kidney diets available as well by other pet food manufacturers. (cspca.com)