Substance reference

Vitamin B12

Vitamins EFSANIH ODS / IOM-DRI (NASEM) 17 products in Stacky

What the European Food Safety Authority and the United States National Institutes of Health have published about vitamin B12 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 B12 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

Adequate intake 4 mcg adults 18+, both sexes EFSA →
No upper limit established by this authority None established No EFSA UL established for vitamin B12 - the SCF concluded there were 'no defined adverse effects' on which to base a UL (SCF, 2000). EFSA →

United States — NIH ODS / IOM

Recommended daily intake (RDA / PRI) 2.4 mcg adults 19+, both sexes NIH ODS / IOM-DRI (NASEM) →
No upper limit established by this authority None established No IOM/NASEM UL established for vitamin B12 - not determinable (ND). NIH ODS / IOM-DRI (NASEM) →

“None established” means that authority examined vitamin B12 and set no figure. A substance for which Stacky holds no published reference has no row here, and no page.

How it is recorded

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

No form, time of day or food note is recorded for vitamin B12 yet.

Indexed studies

Stacky has 5 papers indexed against vitamin B12, and none of them is published here. A study reaches this page only if its own title names Vitamin B12 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 B12 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.