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Sustained correction of vitamin B12 deficiency should be checked annually by serum vitamin B12, methylmalonic acid, or total homocysteine levels (46)
Some countries and states in the US mandate a prescription to purchase it, due to the potential misuse or improper administration
In individuals with normal B12 metabolism and no ongoing deficiency, the body's stores can theoretically last several years
In part one of this series on frequently asked questions about the vaccine, I talked about side effects, safety, and importance of the vaccine, as well as other things that you should know
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