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Why Are Vitamin B12 Injections Used
That enzyme transfers a methyl group from S-adenosylmethionine to nicotinamide, producing 1-methylnicotinamide and consuming a molecule of the cell's principal methyl donor in the process
Before starting B12 supplements , particularly high-dose formulations, discuss with your GP if you have: A history of sleep disorders Existing anxiety or mood disorders Cardiovascular conditions Kidney disease (which may affect B12 metabolism and test interpretation) Leber's hereditary optic neuropathy (cyanocobalamin is contraindicated
Health researchers acknowledge this problem and are working toward determining more accurate cutoffs for deficient, suboptimal, adequate, and excess micronutrient status
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PMID 867037
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