Discover our closest formula to breast milk: Similac Pro-Advance Step 2. Breast milk inspires all our research and innovation when it comes to infant formula. Our non-GMO formula also contains an exclusive blend of 2'-FL†, DHA, lutein and vitamin E, making it our most advanced and closest formula to breast milk. 2'-FL is a unique component of breast milk that helps build baby's immune system.‡ Parents who fed their babies Similac with 2'-FL† reported 3 TIMES FEWER respiratory infections.1,2 With Similac Pro-Advance, you can trust that you are giving your baby the nutrients they need to grow.Value pack 47 more compared to the 584-g container. First to market Scan the QR code on select Similac baby formula containers and get answers to your questions instantly. Calcium-enriched 50 more calcium per equal quantity than Similac Pro-Advance Step 1 for your growing baby. Specially formulated baby and toddler formula to help bridge the possible nutritional gaps that may come with starting solid foods. Brain and eyes DHA is the most abundant Omega-3 fat in the baby's brain and eyes3 Breast milk contains antioxidants, such as lutein and vitamin E to help protect fats in body tissues from oxidation4,5. Immune system 2'-FL is a unique component of breast milk that helps build baby's immune system Parents who fed their babies Similac infant formula with 2'-FL reported 3 times fewer respiratory infections1,2 . Similac's exclusive blend Similac Pro-Advance contains an exclusive blend of 2'-FL, DHA, lutein and vitamin E. Our closest formula to breast milk.