Vitamin D and Multivitamin Supplementation Guidelines for Breastfed Infants (< 12 months)

Vitamin D Supplementation for Breastfed Infants

All breastfed infants (≤ 12 months) should receive 400 IU vitamin D daily from hospital discharge and continue throughout the entire breastfeeding period, with no upper age limit for discontinuation. 1

Discontinuation of infant vitamin D supplementation should be based on feeding method and volume, not on an arbitrary age (e.g., 6 months). 1

For infants who are formula‑fed, Tri‑Vi‑Sol may be stopped only when the infant consistently consumes ≥ 28 oz (≈ 830 mL) of vitamin‑D‑fortified formula each day. 1

Maternal Supplementation as an Alternative

Lactating mothers may replace direct infant supplementation by taking 6 400 IU vitamin D daily, which provides sufficient vitamin D to the infant through breast milk; this regimen must be maintained for the whole breastfeeding duration. 1

Safety of Additional Vitamins in Tri‑Vi‑Sol

Vitamin A: 1 mL of Tri‑Vi‑Sol delivers 1 500 IU vitamin A, which lies within the safety margin for term infants (guidelines for preterm infants recommend 700–1 500 IU/kg/day). This dose is considered safe for term babies. 2

Vitamin C: 1 mL provides 35 mg vitamin C, exceeding the minimum infant requirement but well below toxic levels; parenteral dosing up to 15–25 mg/kg/day is regarded as safe for infants. [3][4]

For infants with chronic conditions that necessitate supplementation, a multivitamin dose of 0.5–1.0 mL daily is deemed adequate. 5

Product‑Specific Safety Considerations

Only infant‑formulated multivitamin preparations should be used. Adult multivitamins containing excipients such as propylene glycol and polysorbate are contraindicated in infants due to toxicity risk. [2][6]