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can you use insulin needles for b12 injections Dr. prescribed injections. Pharmacy only gave me vials. Where do get your and syringes? What size?? Where do I inject? : r/B12_Deficiency B12 Injection Needle Size |
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The Human Protein Atlas
[10] Or perhaps a better way to phrase that would be that there are many downsides to not maintaining healthy levels of vitamin B12, as deficiency can lead to a range of health problems, including neurological and blood disorders

This article was reviewed and minor updates were made in February 2026.

Multiple clinical trials specifically evaluated glucose metabolism