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Stay hydrated daily or enhance hydration with IV therapy
Retrieved 8 December 2016
PMID 6387014
While very high oral doses (1,000 to 2,000 mcg) can achieve some passive absorption without intrinsic factor roughly 1% of the dose is absorbed passively many clinicians prefer the reliability and rapid correction offered by injections in this population
Light exposure: Minimize exposure to direct light during handling
Several studies have indicated that the efficacy of oral vitamin B12 supplements is comparable to that of vitamin B12 injections
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