Vitamin B12 (cobalamin) is a water-soluble vitamin essential for neurological function, DNA synthesis, and red blood cell formation
Am Fam Physician
R., Sarda, P., Raychaudhuri, S
The safeguards come from pharmacy law: a legitimate ingredient source, sterility, and quality-control standards for how it is mixed, and dispensing only against a valid prescription for an individual patient. Should the peptides be approved and moved to the 503A Bulk List, it would be a meaningful step up from buying a vial online from a research use-only seller, but it is still a significant step below an FDA-approved drug, says Dustin Robinson
However, injections are typically administered regularly to maintain optimal B12 levels