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bpc 157 for heart failure BPC-157: The Promise and Perils of a Healing Peptide: Apple, Alex: 9798319471673 Books Stable Gastric Pentadecapeptide BPC 157
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And quite often, it points to the same thing: low vitamin B12

Doran KS, Banerjee A, Disson O, Lecuit M (2013) Concepts and mechanisms: crossing host barriers

doi: 10.2337/diaclin.34.3.148

Eric Topol of Scripps Research Translational Institute, who has studied the issue
Drug Safety Update GOV.UK