The BPC-157 Question A fifteen-amino-acid peptide named BPC-157 has spent fifty years on the margins of medicine and is now headed for an FDA advisory review
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PubMed - Brain-gut Axis and Pentadecapeptide BPC 157: Lists authors including Sven Seiwerth
These include: Oxytocin , which degrades when exposed to benzyl alcohol Desmopressin and vasopressin , both sensitive to the preservative hCG (human chorionic gonadotropin) , which should use sterile water or saline IGF-1 LR3 and IGF-1 DES , which require 0.6% acetic acid solution instead NAD+ , which also degrades in bacteriostatic water within 24-48 hours For these compounds, use preservative-free sterile water or the solvent specified by the manufacturer
The concern is practical rather than safety-based: receptor desensitization, diminishing returns, and cost