Vitamin B12 deficiency anemia is treated with high-dose supplements of vitamin B12.

  1. Treatment depends on the cause of the anemia:
  2. Pernicious anemia requires lifelong therapy with vitamin B12 injections.
  3. Anemia caused by a lack of vitamin B12 can be corrected by vitamin pills combined with a more balanced diet. It may be treated initially with vitamin B12 injections.
  4. Anemia caused by malabsorption is treated with vitamin B12 injections until the condition improves.