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No lab test or imaging study can prove that someone does or does not have hEDS or HSD
So, you measure a higher B12, but part of that B12 is inactive, so useless Oral B12 supplementation, even in the form of a multivitamin preparation, may result in serum B12 concentrations just within the normal range without abolishing symptoms
This less frequent administration makes B12 shot a convenient option for those looking to maintain their B12 levels without the daily hassle of pills
Sridharan et al
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doi: 10.1016/j.jamda.2024.105331 266
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