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With the use of oral supplements, and when vitamin B12 intake has been low or inconsistent for some time, an ample dosage of 500 g is advised for several months before it is lowered

Injections are appropriate for vegans or vegetarians with confirmed deficiency or documented absorption issues, but they are not the only effective option

This service is billed using CPT code 49082/49083

Nasseri, MD at Nasseri Clinic of Arthritic and Rheumatic Diseases

How a B12 injection works Vitamin B12, also called cyanocobalamin, is essential for red blood cell production, nerve function, energy metabolism and the synthesis of DNA