Vitamin
Vitamin D
The NIH Office of Dietary Supplements publishes a recommended amount of Adults 19–70 years 15 mcg (600 IU); Adults 71 years and older 20 mcg (800 IU), and an upper limit of Adults 19 years and older 100 mcg (4,000 IU). Read 2026-08-16.
What is Vitamin D?
NIH's fact sheet for Vitamin D carries no line we quote here under this heading.
How much Vitamin D does NIH publish?
| Life stage | Amount | Printed table |
|---|---|---|
| Adults 19–70 years | 15 mcg (600 IU) | Recommended Amount |
| Adults 71 years and older | 20 mcg (800 IU) | Recommended Amount |
| Birth to 12 months | 10 mcg (400 IU) | Recommended Amount |
| Children 1–13 years | 15 mcg (600 IU) | Recommended Amount |
| Pregnant and breastfeeding teens and women | 15 mcg (600 IU) | Recommended Amount |
| Teens 14–18 years | 15 mcg (600 IU) | Recommended Amount |
| Adults 19 years and older | 100 mcg (4,000 IU) | Upper Limit |
| Birth to 6 months | 25 mcg (1,000 IU) | Upper Limit |
| Children 1–3 years | 63 mcg (2,500 IU) | Upper Limit |
| Children 4–8 years | 75 mcg (3,000 IU) | Upper Limit |
| Children 9–18 years | 100 mcg (4,000 IU) | Upper Limit |
| Infants 7–12 months | 38 mcg (1,500 IU) | Upper Limit |
| Pregnant and breastfeeding teens and women | 100 mcg (4,000 IU) | Upper Limit |
Children and teens
Rows for children and teens appear in the table above, in NIH's own wording.
Pregnancy and breastfeeding
Rows for pregnant and breastfeeding life stages appear in the table above, in NIH's own wording.
What upper limit does NIH publish for Vitamin D?
- Adults 19 years and older: 100 mcg (4,000 IU)
- Birth to 6 months: 25 mcg (1,000 IU)
- Children 1–3 years: 63 mcg (2,500 IU)
- Children 4–8 years: 75 mcg (3,000 IU)
- Children 9–18 years: 100 mcg (4,000 IU)
- Infants 7–12 months: 38 mcg (1,500 IU)
- Pregnant and breastfeeding teens and women: 100 mcg (4,000 IU)
Which foods contain Vitamin D?
NIH's fact sheet for Vitamin D carries no line we quote here about foods.
Where these numbers come from
Every quote and every amount on this page comes from National Institutes of Health, Office of Dietary Supplements. Vitamin D — Consumer. Public domain (U.S. Government work). LAFYA read the sheet 2026-08-16.
Read the full fact sheet at NIH Office of Dietary SupplementsWhat LAFYA does not say about Vitamin D
LAFYA publishes no claim that vitamin d does anything in the body, because we cannot prove one.