This diet is specifically formulated to help cats with lower urinary tract issues, such as the formation of crystals or stones (struvite). Urinary pH Control: Formulated to help maintain an ideal urine pH to prevent stone formation. Low RSS (Relative Supersaturation): Designed to create a urinary environment that is less likely to allow crystals to precipitate and grow. Natural Antioxidants: Contains natural extracts to support the immune system and overall health. Comparison of Veterinary Diets Because kidney health and urinary tract health require different nutrient balances, it is vital to use the one specifically prescribed by your vet. Feature,Vet Care Renal,Vet Care Urinária Primary Goal,Support failing kidneys,Prevent/dissolve urinary crystals Phosphorus,Strictly Low to protect kidneys,Balanced for mineral control Protein,Moderate/High quality but restricted,Standard therapeutic levels Calories,"High density (4,100 kcal/kg)",Standard maintenance levels Peer Tip: If your cat is having trouble urinating, you’d use the Urinária (yellow bag). If your cat has been diagnosed with kidney failure through blood work, you’d use the Renal (pink/red bag). Using the wrong one can actually make the specific condition worse!