# What is the recommended vitamin D dosage for children? Canonical page: https://clinicsjo.com/en/faq/recommended-vitamin-d-dosage-children Language: en Category: pediatrics Publisher: ClinicsJo Published: 2026-09-13T08:09:53.354Z Content updated: 2026-09-13T08:09:53.354Z Translation (ar): https://clinicsjo.com/ar/faq/recommended-vitamin-d-dosage-children The recommended daily dose of vitamin D for children varies by age group. This vitamin plays a vital role in supporting calcium absorption, making it essential for building strong bones and supporting immune, neurological, and muscular health [\[1\]](). It is crucial to understand that these dosages are intended to maintain healthy levels; individual needs may vary based on health conditions or sun exposure, so you must always coordinate with a specialized physician to ensure a safe and appropriate dose for each case [\[1\]](). ## Recommended Daily Dosages by Age Daily vitamin D requirements are measured in International Units (IU). General recommendations have established the following amounts to ensure proper growth for children and adolescents: - **From birth to 12 months:** 400 IU daily [\[1\]](). - **Children aged 1 to 13 years:** 600 IU daily [\[1\]](). - **Adolescents aged 14 to 18 years:** 600 IU daily [\[1\]](). These dosages are considered standard; however, children at higher risk for vitamin D deficiency, such as those with malabsorption issues or chronic conditions, may require close medical monitoring and dosage adjustments under professional supervision [\[1\]](). For more details on symptoms and diagnosis, you can read our article on [Vitamin D Deficiency in Children: Symptoms, Diagnosis, and Safe Treatment (Arabic)](). ## Special Considerations for Infants and Children Breast milk is a poor source of vitamin D; therefore, it is recommended to provide a daily supplement containing 400 IU for infants exclusively fed on breast milk [\[1\]](). Additionally, it should be noted that certain groups, such as children with darker skin or those with obesity, may require further evaluation by a physician, as these factors may affect the body's ability to produce or store the vitamin effectively [\[1\]](). ## Risks of Excess Vitamin D Despite the importance of this vitamin, consuming excessive doses (vitamin D toxicity) poses a real risk. This often results from the overuse of dietary supplements, as toxic levels cannot be reached through sun exposure alone [\[1\]](). Warning signs of vitamin D toxicity include nausea, vomiting, loss of appetite, constipation, general weakness, and weight loss [\[1\]](). In advanced cases, very high levels may lead to excessively high calcium in the blood (hypercalcemia), which can cause heart rhythm disturbances, mental confusion, or kidney function damage [\[1\]](), [\[2\]](). If any of these symptoms appear, seek medical attention immediately and stop administering supplements until blood vitamin D levels are tested in a laboratory to determine the correct treatment course [\[1\]](). ## Medical references - [Vitamin D Deficiency]() - [25-hydroxy vitamin D test]() General health education; not a substitute for individualized clinical assessment. Citation URL: https://clinicsjo.com/en/faq/recommended-vitamin-d-dosage-children#answer