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can you overdose on vitamin b12 injection Consequences of Excess or Deficiency of Vitamin B12 | The BMJ
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For 250mcg: draw to the 10 unit mark (0.10ml)

Consent for publication Written informed consent for publication of clinical details and photographs was obtained from each patient participating in this study prior to entering into the study

Deltoid (upper arm) if someone else administers

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[DOI] [PubMed] [Google Scholar] 24.Salinas M., Flores E., Lpez-Garrigs M., Leiva-Salinas C