Vitamin
Thiamin
Thiamin is found naturally in many foods and is added to some fortified foods. The NIH Office of Dietary Supplements publishes a recommended amount of Men 1.2 mg; Women 1.1 mg. Read 2026-08-09.
What is Thiamin?
NIH's fact sheet for Thiamin carries no line we quote here under this heading.
How much Thiamin does NIH publish?
| Life stage | Amount | Printed table |
|---|---|---|
| Birth to 6 months | 0.2 mg | Recommended Amount |
| Breastfeeding teens and women | 1.4 mg | Recommended Amount |
| Children 1–3 years | 0.5 mg | Recommended Amount |
| Children 4–8 years | 0.6 mg | Recommended Amount |
| Children 9–13 years | 0.9 mg | Recommended Amount |
| Infants 7–12 months | 0.3 mg | Recommended Amount |
| Men | 1.2 mg | Recommended Amount |
| Pregnant teens and women | 1.4 mg | Recommended Amount |
| Teen boys 14–18 years | 1.2 mg | Recommended Amount |
| Teen girls 14–18 years | 1.0 mg | Recommended Amount |
| Women | 1.1 mg | Recommended Amount |
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 Thiamin?
NIH publishes no upper limit for Thiamin.
Which foods contain Thiamin?
"Thiamin is found naturally in many foods and is added to some fortified foods."
Where these numbers come from
Every quote and every amount on this page comes from National Institutes of Health, Office of Dietary Supplements. Thiamin — Consumer. Public domain (U.S. Government work). LAFYA read the sheet 2026-08-09.
Read the full fact sheet at NIH Office of Dietary SupplementsWhat LAFYA does not say about Thiamin
LAFYA publishes no claim that thiamin does anything in the body, because we cannot prove one.