how is vitamin b12 injection administered Service Vitamin B12 Injections Treatment -

Falutz J, Allas S, Mamputu JC, et al

To maintain optimal results, a regular treatment schedule may be recommended

Review meds (e.g., metformin, PPIs), medical conditions (GI surgery, malabsorption), and diet with your clinician

Still, a mild deficiency will almost always get worse over time

This complex process means that conditions affecting the stomach or intestines can significantly impair B12 absorption, including pernicious anaemia, atrophic gastritis, previous gastric surgery, coeliac disease, Crohn's disease, and long-term use of certain medications (such as metformin, proton pump inhibitors, and H2 antagonists)