Royal Canin Veterinary Dog - Urinary S/O Small Dog is a complete food specially designed for small breed adult dogs suffering with urinary stones. The dietetic recipe is designed to combat the build-up of unwanted crystals in the urinary system. This urinary Royal Canin Veterinary Dog - Urinary S/O Small Dog food contains a moderate level of high-quality protein and a reduced magnesium content. This helps to increase and acidify the urine, helping reduce the risk of new urinary stones building up. This dry food can also help to get rid of existing stones and crystals. Royal Canin Veterinary Dog - Urinary S/O Small Dog also contains active ingredients that help with tartar prophylaxis, helping to bind calcium in the saliva, which could otherwise lead to tartar build up. Indications: Struvite stones: helps remove them and prevent reoccurrence Calcium oxalate stones: helps prevent reoccurrence Bacterial cystitis: deals with secondary stones from struvite crystalluria (combined with approp