Substance reference

Vitamin B1

Vitamins EFSANIH ODS / IOM-DRI (NASEM) 4 products in Stacky

What the European Food Safety Authority and the United States National Institutes of Health have published about vitamin B1 intake, and what the catalogue records. Reference figures and citations only.

Stacky is an organisational tool, not a medical device. It does not provide medical advice, and nothing on this page says what vitamin B1 does. Talk to a doctor or pharmacist before starting, stopping or changing what you take.

Published intake references

Each figure is one authority’s published value, with the kind of figure and the people it applies to as that authority stated them. Where the EU and the US differ, both are shown and neither is averaged or converted. Only a tolerable upper intake level sets a ceiling. A recommended or adequate intake is context, not a limit.

European Union — EFSA

No upper limit established by this authority None established No EFSA UL established for thiamin - no adequate data to derive a UL (SCF, 2001). EFSA →

United States — NIH ODS / IOM

Recommended daily intake (RDA / PRI) 1.1 mg adult females 19+ NIH ODS / IOM-DRI (NASEM) →
Recommended daily intake (RDA / PRI) 1.2 mg adult males 19+ NIH ODS / IOM-DRI (NASEM) →
No upper limit established by this authority None established No IOM/NASEM UL established for thiamin - not determinable (ND). NIH ODS / IOM-DRI (NASEM) →

“None established” means that authority examined vitamin B1 and set no figure. A substance for which Stacky holds no published reference has no row here, and no page.

Products in Stacky’s catalogue containing Vitamin B1

4 products whose label declares vitamin B1, listed by brand and drawn as the app draws them. Amounts are the manufacturer’s printed figures; Stacky has measured nothing and ranks nothing.

How it is recorded

What the app records so it can schedule a dose. None of it is advice.

Forms recorded: Capsule.

Recorded interactions

What a named source says about vitamin B1 taken alongside another substance: absorption and nutrient status only. Each row links to its source. A row without one is not published, and neither is one whose source description names a disease or clinical condition. None of these says whether a combination is good or bad.

RelationshipWhat the source saysSource
Documented relationship with Magnesium Making thiamin diphosphate, the coenzyme form of thiamin, from free thiamin requires magnesium alongside ATP and thiamin pyrophosphokinase. Linus Pauling Institute
Checked 6 Aug 2026

Indexed studies

Stacky has 5 papers indexed against vitamin B1, and none of them is published here. A study reaches this page only if its own title names Vitamin B1 and does not name a disease or clinical condition. None of the 5 passes that rule. They remain in the app. How this list is built →

About this page

Stacky is a supplement tracking app. It renders what you take and what published sources say about it; it does not tell you what to take. Every figure on this page names the authority that published it and links to that authority’s own page.

Not on this page: a dose of our own, a grade, a verdict on whether vitamin B1 works, or any statement that it treats, prevents or improves a condition. How these pages are built →

Figures are read from the authorities’ published tables and can go out of date when those tables are revised. If one here is wrong, tell us at support@stacky-app.com and we will check it against the source.