vitamin b12 injection use Sandoz Injectable Solution - 1000 mcg/10 mL Top 5 Vitamin Injections &

Surgeries that affect the stomach where intrinsic factor is made, or the ileum (the last portion of the small intestine) where vitamin B12 is absorbed, can increase the risk of a deficiency

Read more about Importance of vitamin B12 and MTHFR Can you take methyl-B12 and methylfolate together

It can also be found in fortified foods (foods that have certain vitamins and nutrients added to them) such as certain cereals, bread and nutritional yeast

This case report discusses a young male who presented with symptoms including pancytopenia, lymphadenopathy, and fever-clinical signs often associated with hematologic malignancy