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Food and Drug Administration (FDA), and it is more likely with higher doses and after long-term use
Human conditions of insulin-like growth factor-I (IGF-I) deficiency
Article history The information on this page is written and peer reviewed by qualified clinicians
In humans, cyanocobalamin must undergo intracellular enzymatic conversion to the active coenzyme formsmethylcobalamin and adenosylcobalaminwhich, depending on the pH environment, can interconvert with hydroxocobalamin ( Despite extensive biochemical knowledge of cobalamin metabolism and its physiological importance, the optimal supplementation route for maintaining or restoring adequate vitamin B12 levels remains debated
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