B12 is required for the synthesis of red blood cells, growth and a childs development, maintaining the nervous system and synthesis of DNA during cell division, which is especially important in regions of rapid cell division such as bone marrow (red blood cell formation)
Nature 559 , 103108 (2018)
Lee JH, Engler JA, Collawn JF, Moore BA
The labeled amount should be consistent, but actual peptide content can vary between vendors, especially with compounded or research-grade products
The appropriate approach depends on the prescribed dose, injection volume preference, and clinician guidance
However, some people are more at risk of a vitamin B-12 deficiency, including older people, vegetarians and vegans, those with intestinal disorders, and individuals with diabetes, muscular degeneration, or Lou Gehrigs disease