Hill's Prescription Diet S/D Urinary Care Cat Food with Chicken (27%) is a complete, dietetic food for cats, designed to dissolve struvite stones (causing feline lower urinary tract disease, AUS) in adult cats. This food has urine acidifying properties and contains low levels of magnesium. Dosage: Feed only with this food. It is recommended to consult a veterinarian before use. Recommended duration of use: 5 - 12 weeks. Fresh drinking water must be available at all times. Composition: Meat and meat by-products (chicken 27%), by-products of vegetable origin, oils and fats, eggs and egg by-products, seeds, minerals. Analytical components: crude protein 7.0%, crude fat 6.5%, crude fiber 0.44%, ash 1.2%, moisture 81%, chlorides 0.22%, sulfur 0.17%, calcium 0.17%, phosphorus 0.13%, sodium 0.07%, potassium 0.17%, magnesium 0.01%. Nutritional additives per 1 kg: 3a672a (vit. A) 23156IU, E671 (vit. D3) 290IU, 3a700 (vit. E) 163mg, 3a160(a) Beta-carotene 1.7mg; 3b103 (iron) 8.1mg, 3b202 (iodine) 0.3mg, 3b405 (copper) 1.3mg, 3b502 (manganese) 1.8mg, 3b603 (zinc) 20.9mg. Organoleptic additives: natural caramel color.