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Essential for DNA synthesis, red blood cell formation, myelin production, homocysteine metabolism
1000-5000mcg/day (deficiency), 500-1000mcg/day (maintenance)
Cyanocobalamin (synthetic), methylcobalamin (active), adenosylcobalamin, hydroxocobalamin
Works synergistically with:
Meat; Fish; Eggs; Dairy; Fortified foods
Depleted by metformin, PPIs, H2 blockers; Chloramphenicol antagonizes
Leber's optic atrophy (cyanocobalamin)
Methylcobalamin best for neurological support; sublingual/injection bypass absorption issues; vegans at high risk
This information is for educational purposes. Always consult with a qualified healthcare provider before starting any new supplement protocol.
Hormone precursor regulating calcium absorption, immune modulation, gene expression via VDR activation
Methyl donor for DNA synthesis, homocysteine metabolism, neurotransmitter production; essential for cell division
Antioxidant, collagen synthesis cofactor, immune support, enhances iron absorption, regenerates other antioxidants