why is vitamin b12 injection given Injections: What You Need To Know Vitamin B12 Injection Dosage |

Systematic Review Registration: CRD42024554513

NHS Guidelines on Self-Administering B12 Injections The NHS supports patient self-administration of B12 injections where clinically appropriate and following adequate training

Systematic collection of adverse events was not done in all of these studies and interpretation of causality is limited due to the lack of a control group and due to circumstances of administration (e.g., use in fire victims)

So people at greatest risk for deficiency include those with low stomach acid (e.g., older adults and people on proton pump inhibitors or antacids) or low IF production (known as pernicious anemia), people on medications that interfere with B12 absorption (such as metformin), people who have had gastric surgery, those with GI conditions that impair nutrient absorption (like celiac or Crohn's disease), and people on vegan and vegetarian diets

For Nerve Damage: Vitamin B12 can be injected under the skin at the target regions of nerve damage