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There is no need to take very high doses of vitamin B12
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David Nazarian at My Concierge, MD
Vitamin B12 : The recommended daily dose is 2.4 mcg for adults, but higher doses (5001,000 mcg) may be prescribed to treat deficiencies
This review included both RCTs and observational studies (N-RCTs, cohort, and case-control) to assess the efficacy of various Vitamin B12 administration routes
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