b12 supplement vs injection Shots & B12 Injections: The Good, Bad and Alternative! how much b12 in injection

B12 is water-soluble and any excess is excreted in urine there is no established upper tolerable intake level for B12 and toxicity from injection at standard doses has not been reported

Diagnosis, Treatment and Long-Term Management of Vitamin B12 Deficiency in Adults: A Delphi Expert Consensus

Well-documented cases exist, but the term is often applied to whatever a nonspecific precipitation step removes, and some studies use methods that cannot actually confirm what was present

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