For Baby's First 12 Months. Do not add water. Advanced formula. 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 Golden Standard. Supplemental iron should be considered when using any low iron infant formula. Enfamil offers a complete line of formulas to meet your baby's unique feeding needs, for the first 12 months of life and beyond. We have been committed to infant nutrition and innovation for nearly 100 years.