Complete nutrition for your baby's first year. OptiGro. DHA for brain. Lutein for eyes. Vitamin E for development. Similac Advance may soften stools to be more like those of the breast-fed infant's. Breast milk is recommended. If you choose to use infant formula, the makers of Similac have a formula that's right for your baby. Have product-related questions? Call 1-800-515-7677, 8:30 am-5:00 pm, Eastern time, weekdays. www.Similac.com. Feeding Expert from Similac: Help with feeding questions is available at 800-986-8800; FeedingExpert.com. Please consult your baby's doctor before switching formulas. Gluten free. Galacto-oligosaccharides are prebiotics sourced from milk (GOS). C. Cohnii oil is a source of DHA. M. Alpina oil is a source of ARA.