Purina Veterinary Diet UR Urinary Canine Formula for the nutritional treatment & dissolution of struvite stones with urine acidifying properties & low level of magnesium. The role of dietary management in struvite-related Canine Lower Urinary Tract Diseases (LUTD) is to provide a proper balance of total nutrients while meeting the special dietary needs of the patient. Struvite crystals & stones normally occur from a combination of urine saturated with magnesium ammonium & phosphorus & also if the urine has an alkaline p H value. Purina Veterinary Diet UR Urinary Canine Formula at a glance With urine acidifiers & a low magnesium content Promotes acidic urine to help reduce struvite crystal formation & promote dissolution Increased potassium content to help reduce the risk of hypokalemie Very digestible to encourage your dog to eat if it is suffering from loss of appetite Dog food which causes to urine to become more acidic may help to reduce the formation of struvite crystals & stones. Since not all lower urinary tract illness are associated struvite crystals it is important that your pet is diagnosed as suffering from struvite crystals before you feed your dog this dietary pet food. Please consult your vet about possible treatments for your pet or if you need further information