Vitamin D Supplementation for Newborns

Universal Supplementation Recommendation

• All newborns should receive 400 IU of oral vitamin D daily starting at hospital discharge, regardless of feeding method, to prevent vitamin D deficiency and rickets 1, 2
• The American Academy of Pediatrics recommends that all infants consuming less than 28 ounces of commercial infant formula per day should receive 400 IU of vitamin D supplementation daily, beginning at hospital discharge and continuing throughout breastfeeding 1, 2
• Mixed-fed infants should receive supplementation until they consistently consume at least 28 ounces of formula daily 1, 2

Rationale for 400 IU Daily Dose

• The 400 IU/day recommendation is based on preventing vitamin D deficiency and insufficiency, which are associated with increased risk of rickets and poor bone mineralization 1, 2

Alternative Supplementation Strategy

• An alternative approach is maternal supplementation with 6,400 IU of vitamin D daily for breastfeeding mothers, which can provide adequate vitamin D to the infant through breast milk 1, 2

Special Populations

• Preterm infants should receive 200-400 IU/day initially, with some guidelines suggesting up to 800-1,000 IU/day for extremely preterm infants 3
• Infants with malabsorption conditions or on long-term parenteral nutrition require monitoring and potentially higher supplementation doses 3

Safety Considerations

• The tolerable upper intake limit for infants 0-6 months is 1,000 IU/day and for infants 7-12 months is 1,500 IU/day 3

Common Pitfalls

• Vitamin D supplementation should begin at hospital discharge, not at the first outpatient visit 1, 2