How to inject b12 will depend on which you choose
B12 serves as a cofactor for enzymes critical for DNA synthesis, red blood cell formation, and nervous system function
It is a designation used primarily by the FDA (Food and Drug Administration) for products, often in vitro diagnostic (IVD) components like reagents or instruments, that are in the laboratory research phase of development and are not intended for clinical diagnostic use
after an intramuscular injection of 1,000 g of cyanoB 12 , about 150 g is ultimately retained in the body 15 Most vitamin B 12 -deficient individuals in the UK and other countries are treated with intramuscular vitamin B 12 , and vitamin B 12 replacement has been traditionally administered intramuscularly
Grounded in mechanism
[24] Deficiency [edit] Vitamin B 12 deficiency can potentially cause severe and irreversible damage, especially to the brain and nervous system