Question
Does Vitamin B12 work?
In context of Vitamin B12·Strong support88/100
Evidence strength for Vitamin B12 is scored 90/100 in our rubric, separate from safety and marketing gap. Very strong evidence for treating deficiency; weak evidence for performance boosts in replete individuals.
Full ingredient file
This page is a short answer. Mechanisms, dosing notes, sources, and the rest of the verdict live on the hub for Vitamin B12.
Open Vitamin B12 verdictOther questions on Vitamin B12
A few more focused pages for the same ingredient (we keep lists short on purpose).