This calcium-enriched, non-GMO formula includes 2-FL, a unique component found in breast milk that helps support immune system development. Parents who used Similac with 2-FL reported significantly fewer respiratory infections, making this formula a trusted choice for growing babies. It also contains an exclusive blend of DHA, lutein, and natural vitamin E to promote brain and eye development. Easily digested and packed with essential nutrients, Similac Pro-Advance Step 2 provides the nourishment your baby needs for healthy growth and development.