Specific fkd kidney heart support is an ideal food for cats which suffer from chronic renal insufficiency specific fkd kidney heart support reduces the phosphorus content in the blood which helps to slows down progressive renal insufficiency this will improve the quality of life and help your cat to live longer it also has a limited protein content which reduces the load on the kidneys and increases the omega 3 fatty acid and vitamin content in the blood specific cat fkd kidney heart s