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A B12 test is therefore generally useful for all people
B12 injections are also used to treat people with malabsorption (gastrointestinal conditions that prevent proper absorption of B12 from the gut), for example, people with atrophic gastritis (stomach inflammation) and intrinsic factor deficiency (pernicious anemia) or those who have undergone surgical procedures such as gastrectomy or small bowel resection (stomach or intestine removed), autoimmune diseases, etc
Their effectiveness, benefits, and recommended dosage
Authoritative Sources For patient medication information, review MedlinePlus cyanocobalamin injection information
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