For Baby's First 12 Months. Makes 100 fl oz. Milk-free, lactose-free. Easy-to-digest. Experts agree on the many benefits of breast milk. If you decide to use infant formula, no other formula comes closer to breast milk than advanced formula Enfamil with Iron because it is closely patterned after breast milk - our Gold Standard. ProSobee was specially designed for babies needing a soy formula.