No Severe Hypercalcemia with Daily Vitamin D3 Supplementation of up to 30 µg during the First Year of Life.

Abstract

BACKGROUND:

Vitamin D supplementation is widely recommended for infants, but the optimal dose remains unclear. High intake may result in hypercalcemia.

METHODS:

We evaluated the incidence of hypercalcemia during the first year of life in a cohort of 987 healthy children who received 10 or 30 μg of vitamin D3 supplementation daily. Ionized calcium (Ca-ion) was analyzed at 6 and 12 months, and serum 25-hydroxyvitamin D (25-OHD) and parathyroid hormone (PTH) concentration at 12 months. Severe hypercalcemia was defined as Ca-ion exceeding the reference limit (1.16-1.39 mmol/L) by 10%.

RESULTS:

No severe hypercalcemia occurred. Mild hypercalcemia (1.40-1.52 mmol/L) was present at 6 months in 28% and at 12 months in 2% of infants. At 12 months, 25-OHD ranged between 23 and 241 nmol/L (median 97), and PTH was between undetectable and 104 pg/mL (median 24) and was below the reference range (11.5-78.4 pg/mL) in 11%. 25-OHD and Ca-ion correlated positively (r = 0.149), and 25-OHD was slightly higher in the 12 infants with mild hypercalcemia (median 97 vs. 110 nmol/L, p = 0.046).

CONCLUSIONS:

Vitamin D3 supplementation of 10 or 30 µg did not cause severe hypercalcemia. Mild hypercalcemia was more prevalent at 6 months than at 12 months, and was associated weakly with 25-OHD at 12 months.

• Authors: Saara Valkama, Elisa Holmlund-Suila, Maria Enlund-Cerullo, Jenni Rosendahl, Helena Hauta-Alus, Otto Helve, Timo Hytinantti, Heli Viljakainen, Sture Andersson, Outi Mäkitie
• Journal: Hormone research in paediatrics (Horm Res Paediatr) Vol. 88 Issue 2 Pg. 147-154 ( 2017) ISSN: 1663-2826 [Electronic] Switzerland
• PMID: 28647736 (Publication Type: Journal Article, Randomized Controlled Trial)
• Copyright: © 2017 S. Karger AG, Basel.

Chemical References

• Cholecalciferol
• Calcium

Topics

• Calcium (blood)
• Cholecalciferol (adverse effects, therapeutic use)
• Dietary Supplements
• Double-Blind Method
• Female
• Humans
• Hypercalcemia (blood, chemically induced, epidemiology)
• Incidence
• Infant
• Infant, Newborn
• Male
• Prevalence
• Rickets (blood, prevention & control)