Royal Canin Veterinary Diet Feline Diabetic Dry (DS 46) key benefits: Gluco Modulation - Specific formula to help in the management of post-prandial blood glucose in diabetic cats. High Protein - High protein content. Maintenance of muscle mass is essential in overweight diabetic cats. Low Starch - Formula that contains a reduced level of starch. Moderate Calorie - Moderate calorie content to help combat excess weight gain.