While oral B12 supplements are available, vitamin B12 injections have advantages including enhanced absorption since it bypasses digestion, a fast-acting energy boost from quick absorption, higher blood levels reached versus pills, lasting benefits between maintenance doses, improved concentration and mental clarity, and often more affordable and convenient long-term
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Following repeated oral exposure for 4 weeks (1.75, 7, 28 mg/kg/day), granulomatous inflammation was observed, characterised by infiltration of macrophages and occasional lymphocytes into terminal bronchioles and alveolar spaces
Medication adjustment may be necessary in some cases
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