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Deficiency develops gradually, as the body stores approximately 2-5 mg of B12 in the liver, which can sustain normal function for several years even with inadequate intake or absorption

If you suffer from preexisting allergies, medical conditions, heart failure, or if you are taking other prescription medications (especially for heart conditions) it is highly important to discuss this with your doctor prior to taking B12 supplements

it is a medication that aids in weight loss by regulating appetite and blood sugar levels, rather than directly lowering blood glucose like insulin

Horoupian, D

The process used to detoxify cyanocobalamin could deplete glutathione reserves and even then only a small amount is converted