Royal Canin Feline Urinary SO Morsels in Gravy Can (24/3 Ounce) Boosted potassium and sodium chloride to increase urine volume in cats, reducing the risk of urinary crystals Compounds to balance your cat's urine pH to 6.0-6.3 Restricted magnesium, phosphorus, and calcium, which are the building blocks of struvites Enriched with antioxidants to help maintian your cats healthy immune system