This Iams ProActive Health formula has PreBiotics and beet pulp that work inside the digestive tract to promote healthy digestion and strong defenses. Healthy inside. Healthy outside. Designed for puppies ages 1-12 months, Iams concentrated nutrition proactively nourishes your puppy to help keep him at his best. Natural fish oils with DHA (Docosahexaenoic Acid), a nutrient vital for optimal brain development, promote smarter, more trainable puppies. Protein sourced from chicken and egg helps build strong, firm muscles. Seven essential nutrients nourish the heart; essential minerals promote strong teeth and bones; and antioxidants help develop a strong immune system.