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A clean workspace, ideally a laminar flow hood, for controlled sterile procedures

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

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Rodent studies have identified thyroid C-cell changes

Image Credit: bitt24 / Shutterstock How is B12 absorbed