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PMC 8728740
While this represents a reasonable duration for clinical trials, it provides limited information about safety with years-long continuous use
Luckily, both B12 injections and oral supplements are able to help regulate this deficiency
Poor dietary intake of B12-rich foods, such as meat, fish, and dairy products, is one of the most common causes of vitamin B12 deficiency
Having injectable B12 over the counter will make good treatment of pernicious anemia so much more available
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