can b12 injections cause bloody nose Will and nasal spray really recover my severe deficiency? : r/B12_Deficiency Vitamin B12 Shots: Uses, Intake
Description
J Biol Chem 275: 3817681 pmid:10982792 27

Studies have shown that maintaining a normal level of cyanocobalamin in the blood leads to a reduction in homocysteine levels, thus contributing to slower aging of the brain

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