PrometheusGeneral

Vitamin B12 and Vitamin B12: dosage and how to take it

Each entry’s own grades, side by side. A grade says how strong the evidence is for one outcome — it does not rank one entry over the other.

Compound or practice

Vitamin B12

Non-negotiable for plant-based diets and older adults — deficiency is quiet until it's neurological.

Grade A3 graded outcomesrevised Jul 10, 2026

A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.

Dosage

Vitamin B12: dosage and how to take it

50–250 µg/day, or 1,000 µg 2–3×/week.

Grade A0 graded outcomesrevised Jul 10, 2026

Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.

Swap the two

Graded in both

Outcomes are matched by name. Two entries can describe the same outcome in different words, so one listed further down may still be graded in the other.

No outcome has the same name in both entries. They may still overlap under different wording — read the two lists below.

Graded only in Vitamin B12

  • Correcting deficiency / anemia Large effectEvidence grade A
  • Neuropathy (early deficiency) Moderate effectEvidence grade A
  • Energy in replete people Trivial effectEvidence grade D

Graded only in Vitamin B12: dosage and how to take it

None — every outcome it grades is graded in both.

Conditions

Only in Vitamin B12

Only in Vitamin B12: dosage and how to take it

None.

What each entry says about the other

  • Vitamin B12: dosage and how to take it’s entry · Goes with: Full Vitamin B12 monograph

Both columns are read from the entries as they stand in this library. A comparison is not advice to take either one, and it is no substitute for a clinician who knows the person.