Royal Canin Urinary S/O Pouch 100g Dietary food Expiration date: January 10, 2027 *Yu-packet Post ◎ Urinary S/O for dogs is a specially formulated dietary food intended for dogs with lower urinary tract disease (struvite urolithiasis and calcium oxalate urolithiasis). This diet adjusts mineral components such as magnesium. The nutritional balance of minerals, etc., is adjusted to create weakly acidic urine, making it difficult for struvite to form. The nutritional balance of minerals, etc., is adjusted to maintain a healthy urine volume that is not highly saturated with struvite and calcium oxalate in the urine. The nutritional balance of minerals, etc., is adjusted to maintain a healthy urine volume. The magnesium content, which is a component of struvite stones (magnesium ammonium phosphate), is limited.