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Phase Split option Daily dose 50 mg morning + 50 mg midday Notes Some sources prefer split AM dosing because the plasma half-life is short (about 4 to 7 hours in rodent PK)
Injectable form available only
Loading Doses: Youll begin with a series of injections over a couple of weeks
Harvard Health Blog
Needle size is one of the most common questions people have about B12 injections, and it is a sensible one
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