Blue Buffalo Natural Veterinary Diet Gastrointestinal Support for Dogs 6lbs Readily digestible proteins, carbohydrates and fats for optimal nutrient absorption. Contains vitamins E and C, plus antioxidant-rich ingredients including blueberries and cranberries to support a healthy immune system. Prebiotic fibers help balance and support healthy microflora for overall gastrointestinal health. Formulated to meet the nutritional needs of dogs at all life stages. A wholesome, natural diet that has both beneficial nutrition and a taste dogs will love.