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Immunogenicity: The FDA classified BPC-157 in Category 2 for bulk drug substances, citing possible safety issues in compounding (immunogenicity, impurities, and insufficient safety evidence for suggested administration routes)

But medical experts describe the marketplace as a "Wild West" of unproven, unregulated drugs that could cause serious harm, including infection, allergic reactions or other problems

Immunohistochemical staining in aged mice showed FOXO4 expression in Leydig cells, often with nuclear localization, whereas it was rarely expressed in young mice

You can, but youll pay $200 to $400 for the office visit, wait weeks for an appointment, and likely receive a basic tretinoin prescription without the peptide combination