The Enfamil Premium Infant Formula is totally awesome. As your baby grows and develops, he reaches new and more complex milestones. These milestones are driven by cognitive, motor, social and communication areas of the brain. Enfamil Infant has DHA, a fatty acid recommended by experts and important for infant brain development. As your baby starts crawling and becoming more active, immune system support is important. Prebiotics feed the good bacteria found naturally in the digestive tract ?where 70% of your infant's immune system is located. Emerging science suggests prebiotics may support your baby's developing immune system. Enfamil Infant has a dual prebiotic blend designed to work longer in the digestive tract for more complete support compared to older versions of the formula. This is very significant especially for parents.