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4) Blood Disorders Certain conditions affecting blood and bone marrow including some leukaemias and myeloproliferative disorders such as polycythaemia vera can cause elevated B12 due to increased production of B12binding proteins by white blood cells

This page gives instruction for self injection of B12 which states

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Mental health care professionals who prescribe to patients need to know the half-lives of the drugs that they prescribe, the half-lives of active metabolites, if any, how these half-lives may differ with individual patient characteristics, and how to use this knowledge to prescribe to best advantage

Researchers must understand that this compound is investigational and not FDA approved for any medical indication