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Because injections do not rely on stomach acid or intrinsic factor, a much larger and more reliable share of the dose reaches your bloodstream, even when gut absorption is poor
If you experience more severe side effects, tell your prescribing doctor
More human studies are necessary to determine its safety profile
If your levels are already normal, adding more will not create extra energy your body cannot use
(Accessed September 20, 2022)
When B12 levels are low, the body may struggle to function efficiently
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