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[DOI] [PMC free article] [PubMed] [Google Scholar] 131.Huang D., Lan H., Liu F., Wang S., Chen X., Jin K., Mou X

However, the main concern with oral delivery is bioavailability, or how much of the peptide is absorbed into the bloodstream after digestion

doi: 10.3389/fcell.2020.00824

There are key differences between the two methods for treating B12 deficiency, although both aim to address the issue

Metformin users should start at a lower dose
