Should I use liquid or powdered infant formula?
Infant formula is available in three main forms. Ready-to-use infant formula is the most expensive, the safest, and easiest to use. Powdered infant formula is the cheapest but also the least safe and most difficult to prepare. Liquid concentrate is somewhere between the other two. All forms can become contaminated with microbes or other agents, so it is very important to follow proper technique when preparing and storing them. Babies with weak immune systems, such as very premature or sick babies, have the greatest risk of infection and extra care should be given to their infant formula preparation. If formula is needed, and families do not have access to safe, clean, and reliable water, ready-to-use infant formula is recommended.