does b12 have to be injected into muscle How self-inject intramuscular vitamin - Overview Are Vitamin B12 Shots Right
Description
Cyanocobalamin is an active, easily absorbable form of B12 that corrects deficiencies and supports vital biological functions: nerve health, red blood cell formation, cell metabolism, and DNA synthesis

Vitamin B12, in particular, is a co-factor in myelin formation

Things that affect absorption: How well your body absorbs B12 from pills can vary

People taking metformin, the common diabetes drug, are known to develop B12 deficiency as well, and people who avoid animal products can be deficient
