can b12 injections have side effects who should not get If you a low vitamin B12 level, injections B12 Injection Safety, Side Effects

Individuals most likely to benefit include: Those with pernicious anemia People with gastrointestinal disorders (e.g., Crohns disease, celiac disease, chronic gastritis) Patients following bariatric (weight loss) surgery Older adults with absorption difficulties Strict vegetarians or vegans at risk for deficiency People taking medications that can decrease vitamin B12 levels Laboratory testing usually confirms B12 deficiency before starting injections

An unrelated illness at the same time A B12 injection does not protect you from catching something else that week

Vegans and vegetarians may not get enough B12 from their diet

For private supplementation, your pharmacist will advise based on your blood test results and health history