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Most protocols are prescribed as subcutaneous injections you can do at home (we teach you exactly how), following a schedule your provider recommends
Re-test intervals depend on your specific conditions and treatments
If the birth dose is deferred, it is suggested that the series should begin no earlier than 2 months of age
Specifically, eligible studies included participants (P) with a confirmed diagnosis of vitamin B12 deficiency, interventions (I) involving oral or sublingual vitamin B12 administration, comparators (C) using intramuscular supplementation, and outcomes (O) reporting changes in serum vitamin B12 or homocysteine levels
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What is Vitamin B12, and Why is It Important
