You should seek the advice of your veterinarian if your pet is ill as only he or she can correctly advise on the diagnosis and recommend the treatment that is most appropriate for your pet.

The importance of dietary management in cats with renal failure is indisputable, however the optimum formulation is still controversial

Chronic renal failure is common in cats, and the need to control the dietary intake of some nutrients has been known for many years, but the optimum formulation of a "renal failure ration" still remains controversial.

In a study (Elliot et al "Survival of cats with naturally occurring chronic renal failure: effect of dietary management" Journal of Small Animal Practice (2000) 41:235-242) median survival times were significantly increased (median 633 days compared to 264 days) in cats fed rations containing reduced amounts of  protein (50% less), calcium (68-74% less), phosphorus (78-86% less) and sodium (78-82% less) compared to cats fed on the control maintenance ration. In the following table the % of nutrient compared to the control ration is shown in brackets after the concentration of nutrient in g/MJ of energy :