What is the lower age limit for D3-Vicotrat (Vitamin D3) supplementation in children?

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Last updated: September 18, 2025View editorial policy

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Lower Age Limit for D3-Vicotrat (Vitamin D3) Supplementation in Children

Vitamin D3 supplementation can be safely administered to infants from birth (0 months of age) at a recommended dose of 400 IU/day for infants 0-12 months. 1

Age-Specific Dosing Recommendations

Infants (0-12 months)

  • Recommended daily dose: 400 IU/day 1
  • Tolerable upper intake level:
    • 0-6 months: 1000 IU/day
    • 7-12 months: 1500 IU/day 1

Children (1-18 years)

  • Recommended daily dose: 600 IU/day 1
  • Tolerable upper intake level:
    • 1-3 years: 2,500 IU/day
    • 4-18 years: Higher based on individual needs 1

Special Populations Requiring Supplementation

  • Exclusively or partially breastfed infants: Require 400 IU/day supplementation from birth 1
  • Formula-fed infants: Only require supplementation if consuming less than 28 ounces of formula daily 1
  • Preterm infants: May require higher doses (200-1000 IU/day or 80-400 IU/kg/day) 1
  • Children with chronic conditions: May require individualized dosing, particularly those with:
    • Cystic fibrosis 2
    • Chronic kidney disease 2, 1
    • Conditions requiring glucocorticoid treatment 2

Administration Guidelines

  • Daily administration is preferred over intermittent dosing 1
  • Can be given as drops directly into the infant's mouth 1
  • Best administered after the first feeding at the breast to ensure consistent daily administration 1

Monitoring Recommendations

  • Target serum concentration of 25(OH) vitamin D should be greater than 50 nmol/L (20 ng/mL) 1
  • Routine monitoring is not necessary for healthy term infants receiving appropriate supplementation 1
  • Periodic monitoring is recommended for:
    • High-risk infants (limited sun exposure, darker skin pigmentation)
    • Infants born to vitamin D-deficient mothers
    • Children on long-term supplementation 1
    • Children receiving doses at or above the upper limit of recommended intake 3

Safety Considerations

  • Vitamin D toxicity is rare but can occur, especially with manufacturing errors or prescription mistakes 3, 4
  • Toxicity is defined as serum 25OHD >100 ng/mL with hypercalcemia and/or hypercalciuria 5
  • Symptoms of toxicity include severe hypercalcemia, hypercalciuria, and nephrocalcinosis 4
  • Quality control of over-the-counter supplements may vary, so pharmaceutical-grade products are preferred 4

Common Pitfalls to Avoid

  1. Underdosing: Failing to provide supplementation to exclusively breastfed infants from birth
  2. Overdosing: Exceeding the tolerable upper intake level without medical supervision
  3. Inconsistent administration: Not establishing a regular routine for supplementation
  4. Improper monitoring: Not checking vitamin D levels in high-risk infants or those on long-term supplementation
  5. Using inappropriate formulations: Using adult formulations for infants, which may lead to dosing errors

In conclusion, D3-Vicotrat (Vitamin D3) can be safely administered from birth (0 months) at appropriate doses, with careful attention to dosing guidelines based on age and individual risk factors.

References

Guideline

Vitamin D Supplementation in Infants

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Vitamin D supplementation and risk of toxicity in pediatrics: a review of current literature.

The Journal of clinical endocrinology and metabolism, 2014

Research

Iatrogenic vitamin D toxicity in an infant--a case report and review of literature.

The Journal of steroid biochemistry and molecular biology, 2015

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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