can i give blood if i have b12 injections How to a Injection: Step-By-Step Instructions How Long Does a B12

It is named that because the B12 is delivered into the fat below your skin and above your muscle

Dosing information Usual Adult Dose for Pernicious Anemia: Initial dose: 100 mcg intramuscularly or deep subcutaneous once a day for 6 to 7 days If clinical improvement and reticulocyte response is seen from the above dosing: 100 mcg every other day for 7 doses, then: 100 mcg every 3 to 4 days for 2 to 3 weeks, then: Maintenance dose: 100 to 1000 mcg monthly Duration of therapy: Life Comments: Administer concomitant folic acid if needed

Oncotarget 8 , 4003740051 (2017)

D51.9 - Vitamin B12 deficiency anemia, unspecified: This code is for instances when B12 deficiency anemia is diagnosed, but its specific cause hasn't been determined