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Large human trials and better active surveillance would help answer these questions
Doctors can make B12 injections work best for their patients by knowing the standard doses and what affects them
injection is a shot given in large muscle groups, typically shoulder (deltoid), thigh (vastus lateralis) and/or butt (gluteus)
These values provide a safer framework for symptomatic people who fall within the lower end of the vitamin B12 normal range (200500 pg/mL)
Serious reactions are rare and almost always fixable when caught early
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