Royal Canin Veterinary Diet Urinary S/O is a veterinary-exclusive dry dog food clinically formulated to support adult dogs with lower urinary tract and bladder health concerns. It effectively aids in the dissolution of pure struvite stones and helps prevent both struvite and calcium oxalate crystal formation. By promoting urine dilution and utilizing Relative Super Saturation (RSS) methodology, this advanced kibble helps minimize the concentration of minerals that lead to painful bladder stones, ensuring long-term urinary tract comfort.