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However, if your body has trouble absorbing B12 due to digestive issues, pills may not be as effective

Oral Supplements Work Well For: People with healthy digestive function using B12 supplementation preventatively rather than correctively often achieve adequate results with oral forms

You might not have a dramatic "before and after" moment, but over a few weeks, things just start working better sleep feels more restorative, workouts feel less effortful, and the afternoon slump eases

It simply passes through and is excreted

However, absorption decreases significantly as doses increase, and individuals with compromised gut health may absorb only 1-2%