For Baby's First 12 Months. Do not add water. Advanced formula. Perfect for child care & travel. No other formula is closer to breast milk. 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. Our commitment to infant nutrition and innovation for nearly 100 years has made Enfamil with Iron the Number 1 Selling infant formula in America.