Get 15% off each AutoShipped order. Price will be reflected in cart at checkout. Royal Canin Urinary SO Moderate Calorie for cats is a complete and balanced diet used for cats with or at risk of developing feline lower urinary tract disease and predisposed to weight gain, to help dissolve pure struvite uroliths, and help prevent struvite urolithiasis, calcium oxalate urolithiasis, and calcium phosphate (brushite) urolithiasis. This diet promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals. • Promotes the production of urine undersaturated (RSS < 1) for struvite dissolution and prevention. • Promotes the production of urine metastable (RSS < 5). • Moderate calorie content, compared to feline URINARY SO, to help maintain ideal weight.