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Unlike synthetic cyanocobalamin, which your body must convert, methylcobalamin is the active, "ready-to-go" form of vitamin B12 that dives straight into methylation pathways, supporting everything from energy production to brain health

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This knowledge also explains why oral B12 supplementation may be ineffective in intrinsic factor deficiency, requiring alternative routes like sublingual, nasal, or injectable B12 to bypass the intrinsic factor-dependent absorption pathway

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