1 Introduction Vitamin B12, or cobalamin, is a water-soluble vitamin, that plays an essential role in cellular metabolism, particularly in DNA synthesis, methylation processes, and mitochondrial functions ( Lactobacillus spp ) (LeBlanc et al., 2013), which are also found in the gastrointestinal tract of herbivorous animals, where the synthesis of B12 occurs and the vitamin can be acquired in animal tissues
For people with pernicious anemia, vitamin B12 injections can be a game-changer in restoring the energy needed to live an active, fulfilling life
2006 Oct;38(10):1861
We consider it a precursor to glutathione
These figures come from preclinical and pharmacokinetic literature, not from approved human dosing and note the standard route for this molecule is oral