Similac Advance contains Neuro-nutrients such as Omega 3 and 6 fatty acids of precursors of DHA and ARA, Choline, Iron, Taurine, Iodine, Folic acid and Zinc that are known to support baby's brain development. Level and blend of nucleotides that is known to support baby's developing immune system. Fat blend that is known to support easy digestion and promote calcium absorption. Essential fatty acids, Vitamins and Minerals (such as Calcium and Iron) that are known to support healthy growth of the baby