Levomilnacipran has not been studied in nursing mothers. However, the racemic form of milnacipran has low levels in breastmilk and would not be expected to cause any adverse effects in breastfed infants. Until more data become available, levomilnacipran should be used with caution during breastfeeding, especially while nursing a newborn or preterm infant. Monitor breastfed infants for agitation, irritability, poor feeding and poor weight gain.