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Before recommending B12 injections, our experienced providers perform a thorough medical evaluation

Image: Peter Dazeley/Getty Images About the Author Marygrace Taylor, Health Writer About the Reviewer Pieter Cohen, MD, Contributor Disclaimer: As a service to our readers, Harvard Health Publishing provides access to our library of archived content

Clinical Significance of Vitamin D Vitamin D Deficiency As a result of the addition of vitamin D to milk, deficiencies in this vitamin are rare in most developed countries

Molecular Structure The amino acid sequence of BPC 157 is: Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val This peptide is chemically stable, making BPC 157 resistant to enzymatic degradation