is a b12 injection intramuscular Injections at Home - Safety Guide for Self-Administration Nurse - 💡NurseInTheMaking's Question of

B12 is a water-soluble vitamin your body uses to: Make red blood cells (which carry oxygen to your tissues) Keep your nervous system functioning properly Help your body turn food into usable energy Your body can't make B12 on its own you get it from animal-based foods (meat, eggs, dairy) or supplements

Post-Bariatric Surgery Dosing Requirements Those who have had bariatric surgery often need more B12 because their bodies dont absorb it well

Thats rightits encoded by the mitochondrial genome, not the nuclear DNA like most proteins

To Summarize Vitamin B12 injections side effects are incredibly rare, and when reactions occur, they are more likely due to additives rather than the B12 itself