B12
Also known as Vitamin B12, Cobalamin, Methylcobalamin, Cyanocobalamin
An essential water-soluble vitamin required for red blood cell formation, nervous-system function, DNA synthesis, and one-carbon metabolism; it is not a peptide.
Overview
B12 is vitamin B12, a cobalamin vitamin. It is included here only because injectable B12 is frequently marketed beside peptides and lipotropic blends.
The Science
Vitamin B12 is required for neurologic function, red blood cell formation, DNA synthesis, and methylation-related metabolism.
- Deficiency treatment - strong evidence when deficiency or malabsorption is present.
- Nervous system - myelination and neurologic function.
- Methylation markers - methylmalonic acid and homocysteine can help interpret status.
Evidence Snapshot
B12 is essential, but supplementation claims depend on baseline status. Correcting deficiency is different from enhancement in a replete person.
References
- [1]NIH Office of Dietary Supplements. Vitamin B12 fact sheet for health professionals(2024) · source
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