is it safe to take b12 injections Vitamin shot Feeling worse after B12 Injection:
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However, this will require you carefully plan to meet your daily vitamin B12 requirements through three approximately equal doses of vitamin B12-fortified foods spread over three eating moments throughout the day

[DOI] [PMC free article] [PubMed] [Google Scholar] 137

They do not receive the same level of FDA approval as regular medications, and self-reported issues with dosing have been common
