Royal Canin Urinary SO Index® promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals. Supports urinary health and moderate calorie content supports healthy weight. Chicken meal, brewers rice, corn gluten meal, corn, powdered cellulose, wheat gluten, natural flavors, chicken fat, salt, potassium chloride, fish oil, calcium sulfate, monocalcium phosphate, sodium bisulfate, vegetable oil, DL-methionine, egg product, fructooligosaccharides, choline chloride, monosodium phosphate, taurine, glucosamine hydrochloride, vitamins [DL-alpha tocopherol acetate (source of vitamin E), biotin, niacin supplement, D-calcium pantothenate, pyridoxine hydrochloride (vitamin B6), riboflavin supplement, vitamin A acetate, thiamine mononitrate (vitamin B1), vitamin B12 supplement, folic acid, vitamin D3 supplement], trace minerals [zinc proteinate, zinc oxide, ferrous sulfate, manganese proteinate, manganous oxide, copper sulfate, calcium iodate, sodium selenite, copper proteinate], L-carnitine, marigold extract (Tagetes erecta L.), rosemary extract, preserved with mixed tocopherols and citric acid.