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An injection ensures you get the full dose, regardless of your digestive health." Dr
Unlike other vitamins, the absorption of vitamin B12 depends on a protein produced in your stomach, called intrinsic factor
At 24 h after administration, the mean concentrations of total radioactivity in the kidney, thymus, liver, spleen, and gastric wall decreased significantly but were still higher than the mean concentrations in the plasma at the same time
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