Enfamil Reguline Infant Formula with Iron has a clinically proven blend of two prebiotics; brain-nourishing DHA (docosahexaenoic acid; an omega-3 fatty acid) and choline for complete everyday nutrition; and easy-to-digest, partially broken down proteins; and it is specifically designed to help support digestive health and promote comfortable stools (it is designed to be fed when perceived stooling issues, such as occasional, difficult bowel movements, are causes of parental concern). This unique formula feeds the good bacteria in the digestive tract with a type of carbohydrate also found in breast milk and helps support the digestive system for digestive health. Enfamil Reguline is designed to provide the sole source of nutrition for infants up to six months of age and provides a major source of nutrition for the remainder of the first year.