medicare guidelines for b12 injections and injections: Are They Covered? Cobalamin (vitamin B12) and Folate

Using an injectable supplement can improve trace mineral and Vitamin B12 status at these critical times, promoting a healthy immune system, which is important in resisting disease and has a positive impact on reproduction

B12 injections and IV infusions have been around for a while

Vitamin B complex includes 8 water-soluble vitamins with multiple roles in cell metabolism

But if you just want the fast answer, most research shows GHK-Cu to be the more broadly studied copper peptide for both hair and skin

References Vitamin B12 Product Label Cyanocobalamin injection [package insert]

A slower approach has been discussed on here of weekly rather thsn every other day loading Not heard of monthly without loading first though