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Vitamin B12 is needed for healthy red blood cell formation, DNA synthesis, and normal nervous-system function

Research suggests the peptide may interact with neurotransmitter systems including the dopaminergic, serotonergic, and GABAergic pathways, though these findings remain in the preclinical stage

Regulatory / legal status: Not FDA-approved for any human therapeutic indication

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And collagen is a superstar for skin and hair benefits too