Can switching formula hurt my baby?
1 Switching between formula brands is not a problem, even though many parents wonder if doing so may cause fussiness or stool changes in their baby. In fact, you can even mix different brands of the same type of formula together if you feel that your baby responds better to a mixture of one brand with another.
How long does it take for baby to adjust to formula change?
Make sure you give your baby enough time to try the new formula, usually 3 to 5 days. Some babies will adjust right away. Others may have slight changes in stool pattern, gas, and/or spit-ting up until they become accustomed to the new formula. If you have questions or concerns, check with your baby’s doctor.