how often for vitamin b12 injections When Should You Get a Injection? How Often Can I Take

Iron levels are typically assessed at the same time, alongside a full blood count

doi:10.1086/321262 Reynolds EH

Units on a U-100 syringe: 0.20 mL 100 = 20 units

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A patient on a loading schedule of frequent injections will show higher levels than one on monthly maintenance, and the timing of the last dose relative to the blood draw can change interpretation

The ability to shuttle between the +1, +2, and +3 oxidation states is responsible for the versatile chemistry of vitamin B 12 , allowing it to serve as a donor of deoxyadenosyl radical (radical alkyl source) and as a methyl cation equivalent (electrophilic alkyl source)