What should I do if my baby refuses to drink formula?

First, it’s essential to determine whether the baby dislikes the infant formula or the bottle nipple. This issue is easy to resolve: simply have the mother express her breast milk into a bottle. If the baby drinks happily, it indicates that the baby dislikes the formula—so you should try adjusting how the formula is prepared (e.g., concentration, temperature, or mixing method). Conversely, if the baby refuses the bottle even with breast milk, the issue likely lies with the nipple. In this case, mothers should select bottles with softer, more comfortable nipples and experiment with several different types to find one the baby accepts.