Hill's prescription diet c/d multicare stress cat food with ocean fish. complete dry dietary pet food, to reduce the recurrence of struvite stones (a cause of feline lower urinary tract disease, flutd), to dissolve struvite stones and reduce the occurrence of oxalate stones in adults cats. this food has struvite urine desaturation properties, urine alkalinization properties, and contains low levels of magnesium, calcium, and vitamin d. hill's nutritionists and veterinarians have developed prescription diet c/d multicare stress diet food specially formulated to support your cat's urinary health while managing stress. in fact, c/d multicare is a clinically tested food that reduces the recurrence of the most common urinary symptoms by 89% . composition : cereals, meat and derivatives of animal origin, vegetable protein extracts, oils and fats, fish and fish derivatives (ocean fish 4%), minerals, seeds, milk and dairy products (milk protein hydrolyzate 0.1%). substances that alkalize urine : potassium citrate (2 g/kg), calcium carbonate (1.7 g/kg).