What it is
Evidence basis: Human clinical evidence
At a glance
What it is, why people use it, the evidence, and what to know before trying it.
Safety & interactions
Known side effects, interactions and use limits from reviewed sources.
Vitamin B12 is generally well tolerated, but a supplement should not delay investigation of anemia or neurologic symptoms. The appropriate oral or injected form depends on the cause and severity of deficiency.
Seen in protocols
Public protocols that include Vitamin B12. Open one to see the full context and source.
Found in blends & products
Vitamin B12 is listed as an ingredient or component in these reviewed interventions.
Methylfolate with methylcobalamin
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Continue into interventions that appear alongside this one.