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Description
This means they easily go back and forth between reduced and oxidized

This assumes a 5 mg/mL concentration (2 mL bacteriostatic water)
For most research applications, especially those focused on gut health, administering oral BPC-157 on an empty stomach is recommended

However, for B12, if any part of that complex digestive process is compromised especially the intrinsic factor or the absorption sites in the intestine then a significant portion of the B12 from a tablet might never reach your bloodstream
[DOI] [PubMed] [Google Scholar] 86.Muller G, Ertl J, Gerl M, Preibisch G