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Description
The effects of a vitamin B12 injection can last several weeks, depending on individual needs and deficiency levels

[DOI] [PubMed] [Google Scholar] 72.ULC
When taken in appropriate doses, vitamin D injections are generally well-tolerated with no side effects

For the vitamin to serve inside cells, the TC2-B 12 complex must bind to a cell receptor protein and be endocytosed
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