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It does not affect gastric emptying

Although it is unknown whether it is excreted in human milk, caution is advised

Analyzing a series of studies using differing amounts of B12 via injection, the IOM determined that 1.5 g of absorbed B12 per day was enough to normalize red blood cell parameters (hematocrit, red blood cell volume, and anemia) in the average patient with pernicious anemia

Overall preclinical safety profile has not raised major flags at tested doses

If you are alone, the outer- anterior thigh is likely the easiest way to administer the injection but may cause more discomfort than the upper buttocks

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