Similac Pro-Sensitive is designed for fussiness and gas due to lactose sensitivity (not for infants or children with galactosemia). Similac Pro-Sensitive is the first infant formula for sensitive tummies with 2’-FL human milk oligosaccharide, an immune-nourishing prebiotic found; in breast milk that supports baby’s developing immune system, and the first leading infant formula with no artificial growth hormones;. Parents reported; Our exclusive blend of DHA, Lutein, and Vitamin E is important for helping support baby’s brain and eye development. You can trust Similac, the #1 infant formula brand chosen by moms; and the #1 brand fed in hospitals. Not from human milk; At significant levels; No significant difference has been shown between milk derived from rbST-treated and non-rbST-treated cows. Total US infant formula, all outlets as of 3/31/2018, Nielsen data.