b12 injections dosage chronic fatigue syndrome Frontiers Vitamin B12 - PMC
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doi: 10.1016/j.jhep.2008.12.031 112 TranAAPrasadV

[62] [63] The mechanism of action is straightforward: the hydroxycobalamin hydroxide ligand is displaced by the toxic cyanide ion, and the resulting non-toxic cyanocobalamin is excreted in urine

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Afterward, maintenance injections may be recommended monthly to help sustain optimal B-12 levels
