PRO PAC® Ultimates™ Overland Red™ uses a primary protein source from premium quality beef meal which provides essential amino acids to help maintain strong muscle and a healthy, shiny coat. This antioxidant formula is fortified with Vitamin A and Vitamin C along with nutrient-rich vegetables and fruits like peas, chickpeas, apples, blueberries, carrots, spinach and cranberries. The fibers from these vegetables and fruits also aid in overall digestion.