how many units of b12 should i inject Vitamin Injection Dose for Adults: 7 Dosage Facts Optimal Vitamin B12 Dosage and

There is no established clinical timeline, because the controlled trials that would establish one have not been done

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

*Drugs in Pregnancy and Lactation* (11th ed.)

Who Needs Vitamin B12 Injections and Why