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If you are being treated with B-Complex injections, it may be because of alcohol-related deficiency (common in chronic alcohol use)
Expected outcome: unpredictable, possible product contamination
Because 10 to 30 percent of older people may be unable to effectively absorb vitamin B 12 naturally occurring in foods, those older than 50 years should meet their RDA mainly by consuming foods fortified with vitamin B 12 or a supplement containing vitamin B 12
Oral supplementation has shown effectiveness but may not match the efficacy of IM in certain scenarios
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