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This is a quick process that takes around 10 20 minutes and is performed through intravenous or subcutaneous injection
Scientific Background
Oral delivery is pharmacokinetically disadvantaged versus injection for systemic targets, but may have a genuine local advantage for GI-tract applications because degradation products act locally before absorption
How vitamin B12 works in the body Vitamin B12 works differently than other vitamins, in that a substance called intrinsic factor must be present in the intestinal tract in order for the body to absorb B12
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