Birth to 12 months. Add water. Use Similac Advance to give your baby a strong start in life. DHA and ARA, special nutrients found in breast milk that are important for brain and eye development. Provides calcium for your baby's growing bones. Designed to be gentle on your babyżs developing tummy. Breast milk is recommended. If you choose to use infant formula, the makers of Similac have a formula that's right for your baby.