Recent advances in the nutritional support of kidney function mean that we now have two diets to help support cats with chronic renal insufficiency. Pro Plan Veterinary Diets NF Renal Function Early Care and Pro Plan Veterinary Diets NF Renal Function Advanced Care have been developed to help support cats at different stages of their chronic renal insufficiency. The choice of diet should be guided by your veterinarian. Any changes to your pet’s food should be done over a period of at least a week, gradually introducing the new diet whilst reducing the previous food. Complete dietetic pet food for adult cats for the support of renal function in case of chronic renal insufficiency.