Formula manufacturers offer special products that meet the nutritional needs of these babies by providing complete nutrition while eliminating or restricting proteins that are harmful to the infants. When selecting the best formula for an infant, your baby's pediatrician is the best person to consult. For that reason, mothers should always ask their baby's health care professional for a formula recommendation. Once a physician recommends a particular formula, moms have other choices to face. Most moms use a combination of the forms offered.
Powder is usually the least expensive, but can be time-consuming to prepare.
Powdered formula must be mixed with a specified amount of sterilized water and can be made one bottle, or several bottles, at a time. Powder must be used within 1 month of opening the container. Concentrated liquids are also economical and convenient. Bottles are prepared by mixing equal parts of formula and sterilized water. Opened formula should be refrigerated and stored in a sealed container and used within 48 hours.