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For example, one study found that after taking 1,000 mcg of oral vitamin B12, only about 1.3% (13 mcg) is absorbed into the bloodstream
Hypokalemia and sudden death may occur in severe megaloblastic anemia which is treated intensely
Discard if the solution becomes cloudy, loses its blue tint, or develops particulate
doi:10.1038/nrgastro.2009.125
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