Hills Prescription Diet c/d Multicare Stress Urinary Care Dry Cat Food is a complete and balanced food that has been specially formulated to support your cat’s urinary health and help to reduce the formation of urinary stones and crystals. Product details Has been designed to promote a desirable pH level in the urine helps dissolve struvite stones and to prevent them forming enriched with a blend of antioxidants and omega-3 fatty acids contains controlled levels of magnesium, calcium and phosphorus supports your cat’s immune system and helps them manage stress.