Iams ProActive Health Puppy & Junior Large Breed helps your puppy maintain a healthy grow rate. Designed for dogs ages 1-24 months and up to 25 kg at maturity, Iams concentrated nutrition proactively nourishes your large-breed puppy to help keep him at his best. Natural fish oils with DHA (docosahex aenoic 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 while essential minerals promote strong teeth and bones, and antioxidants help maintain a strong immune system. A high-quality protein with no fillers or artificial preservatives, Iams is gentle on the digestive system. Fuel your puppy's healthy development with 100% complete and balanced nutrition that's vet recommended and 100% satisfaction guaranteed.