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This uptake depends on a protein called intrinsic factor (IF), which captures B12 in the small intestine, absorbing it in the final stretch of your small intestine (the ileum)

doi: 10.1002/fsn3.4228

They're much more convenient for many people, and you don't need special techniques to take them

Oral (Capsules or Powder): May be better for digestive tract research due to peptide stability in gastric juice

After filtering out disconnected nodes, a protein-protein interaction (PPI) network comprising 17 nodes and 13 edges was obtained

It may be used by licensed healthcare professionals in clinical situations involving vitamin B12 deficiency or related conditions