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When stratified by administration route, the mean percentage changes were: Intramuscular (IM): 307% Oral: 285% Sublingual: 199% IM administration showed the highest average B12 increase, although oral and sublingual routes also yielded substantial improvements, supporting their use as effective and less invasive alternatives
A medical record review was performed on all cases so identified
doi: 10.3390/biom11020185 21 HuthTEaton-FitchNStainesDMarshall-GradisnikS
More research is needed to fully understand this relationship.
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