ROYAL CANIN Veterinary Diet feline URINARY SO 30 is designed specifically for cats. The URINARY SO 30 formula will ensure that the production of a urine undersaturated with struvite and with a level of calcium oxalate saturation at which spontaneous homogeneous crystallization will not occur. ROYAL CANIN Veterinary Diet feline URINARY SO 30 is for cats with or at risk of developing feline lower urinary tract disease. Dry format: Dissolve pure struvite uroliths Helps prevent the formation of struvite uroliths Helps minimize the risk of formation of calcium oxalate Helps minimize the risk of formation of brushite uroliths ROYAL CANIN Veterinary Diet? feline URINARY SO 30? Dry Chicken meal, rice, corn gluten meal, ground corn, chicken fat, natural flavors, cellulose powder, sodium chloride, dried brewers yeast, dried egg powder, potassium chloride, calcium sulfate, monosodium phosphate, choline chloride, calcium carbonate, taurine, DL-methionine, vitamins DL-alpha-tocopherol (source of vitamin E), niacin, biotin, riboflavin (vitamin B2), D-calcium pantothenate, pyridoxine hydrochloride (vitamin B6), thiamine mononitrate (vitamin B1), vitamin B12 supplement, vitamin A acetate, vitamin D3 supplement, folic acid], trace minerals