If your cat suffers from lower urinary tract disease you can help by feeding it a diet which provides optimal nutritional support for its urinary system urinary tract disease can lead to urinary stones including struvite and calcium oxalate royal canin urinary so products were developed as an adjunctive treatment for cystitis and urinary stones indications dissolution of struvite uroliths management of recurrent struvite urolithiasis and calcium oxalate contraindications pregnancy or lac