0 - 12 Months. DHA/ARA. For conditions such as prematurity. Promotes growth and development. Breast milk is recommended. If you choose to use infant formula, the makers of Similac have a formula that's right for your baby. Use Similac NeoSure to give your baby a strong start in life. An easy-to-digest milk-based formula that provides all the nutrients your premature baby needs. DHA and ARA, special nutrients found in breast milk that are important for brain and eye development. DHA and ARA have been clinically shown to improve visual development in preterm babies.