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how long does it take for b12 injections to work Injections: Who Should Get Them and Do They Last? Seeing Red: Do B12 Injections
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[DOI] [PubMed] [Google Scholar] 211.Dobrzyn A, Ntambi JM

By the time most people are diagnosed, their bodys long-term B12 reserves (which are stored in the liver) are completely empty

It is frustrating to us as Patient Advocates that initial evidence relied on was not at that time suitably researched or understood and now, 30 years on, of course, we know so much more

Oral B12 supplements are widely available in tablet, capsule, and sublingual forms
