Royal Canin Canine Urinary S/O Ageing 7+ is a complete dietetic feed for ageing dogs formulated to dissolve struvite stones and reduce the risk of calcium oxalate crystal formation. Key benefits: Urinary Tract Health- Effective struvite stone dissolution and specifically formulated for up to 80% of all urinary stones. Cognition and vitality ageing support- Includes exclusive blend of nutrients and antioxidants. Also supports kidney health Highly palatable- Encourages food intake with ageing dogs suffering from poor appetite