Complete nutrition for Your Babys First Year. Similac has EarlyShield: In addition to having DHA/ARA, we're the only formula that has Lutein, an important nutrient babies can only get from breast milk or Similac. It's especially helpful now, during critical brain and eye development. Brain & Eye: Lutein to support eye health & DHA/ARA for brain & eye development. Immune Support: Immune supporting nucleotides & Prebiotics for digestive health. Strong Bones: Exclusive palm olein oil-free fat blend supports excellent calcium absorption.