How long does it stay active
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Factors That Affect How Long B12 Stays in the Body Several factors influence how long B12 stays in the body, including health conditions, metabolism, and age
If your body has a vitamin B12 deficiency, this can affect the replication of DNA, which may increase the risk of cancer, heart attack, or stroke
Pernicious anaemia, atrophic gastritis, proton pump inhibitors, metformin, and gastrointestinal surgery significantly impair B12 absorption
It is supplied in a 3 ml sterile ampoule , typically administered intramuscularly (IM) for faster absorption