Royal Canin Veterinary Urinary S/O Small Dog is a nutritionally complete dog food designed to dissolve kidney and bladder stones in adult dogs weighing less than 10kg and help minimise the chance of them reoccurring. With reduced magnesium and carefully controlled high quality proteins, LP 18 works to dissolve and prevent struvite uroliths and struvite or calcium oxalate urolithiases as well as bacterial cystitis.The low RSS formulation in Urinary S/O Small Dog helps to dilute the urine and reduces the concentration of ions, helping to remove leading factors in the formation of kidney and bladder stones. To boot, the delicious Urinary S/O Small Dog kibbles contain a nutrient designed to retain calcium in to saliva, working to halt the build up of tartar.We recommend that you seek an opinion from a veterinarian before beginning this diet. Please do not feed Veterinary Urinary S/O Small Dog to pregnant or lactating dogs, puppies, or dogs with chronic renal failure, metabolic acidosis, pancreatitis, heart failure, hyperlipidaemia, or undergoing treatment with urine acidifying drugs.Ingredients:Rice, maize flour, dehydrated poultry protein, animal fats, maize gluten, hydrolysed animal proteins, minerals, vegetable fibres, egg powder, wheat gluten**, soya oil, fish oil, fructo-oligo-saccharides, marigold extract (source of lutein). Protein sources : dehydrated poultry protein, maize gluten,hydrolysed animal proteins, egg powder. **L.I.P.: protein selected for its very high digestibility.Additives (per kg):Vitamin A: 16000 IU, Vitamin D3: 1000 IU, E1 (Iron): 47 mg, E2 (Iodine): 4.7 mg, E4 (Copper): 14 mg, E5 (Manganese): 61 mg, E6 (Zinc): 148 mg, E8 (Selenium): 0.06 mg, Urine acidifying substance: calcium sulphate (0.8%). Technological additives: Pentasodium triphosphate: 3.5 g. Preservatives - Antioxidants.Analytical Constituents:Crude ash: 7.3%. Crude fibre: 2.3%. Crude oil fats: 17%. Protein: 20%.