Why B12 Matters Vitamin B12 (cobalamin) is essential for energy production, neurological function, red blood cell formation, and methylation the biochemical process that keeps thousands of pathways in your body working correctly
They are not interchangeable, and the comparison is not symmetrical
That depends on your situation
10.2903/j.efsa.2015.4150 20 EggerM.Davey SmithG.SchneiderM.MinderC
Finally, select an injection site, commonly the upper arm, thigh, or abdomen, and clean it with an alcohol swab
[2] However, unexplained elevation warrants investigation for underlying pathology, particularly hepatic or haematological disease