Constipation is not the number of bowel movements your baby has each day. It's when those infrequent movements are firmly formed stools that are difficult for your baby to pass. They may come out in hard pellets, or cause pain or bleeding. We would not expect our formulas to cause constipation. However, with any change in formula or feedings, your baby's stools may change in number, colour, and consistency. Your doctor is your best source of advice about your baby's health, and we encourage you to discuss any questions about your baby's stool pattern with your doctor.