Nestle Nan Excella Pro 1 Infant formula is a mixture of DHA and ARA for infants who are not breastfed from birth. It is made using spray dried formula. DHA and ARA are essential in promoting baby’s normal brain growth. It contains many important nutrients, such as iron iodine, choline, and whey protein. Whey protein is a component of protein found in milk, making it easier to digest.