ADVANCE Veterinary Diets Renal Cat is a complete dietetic food for adult cats formulated to support kidney function in cases of chronic kidney disease (CKD). With restricted but high-quality protein and low phosphorus, it helps ease the kidneys workload while maintaining lean muscle. This clinically targeted recipe also supports urinary pH control and helps reduce the risk of calcium oxalate stone formation. Prescription required. (Available in 1.5 kg and 8 kg.)