Unapproved Peptides Raise Safety and Purity Concerns

Unapproved injectable peptides such as BPC-157 are promoted online for fitness, injury recovery and cosmetic benefits despite limited evidence and uncertain safety. Users in the United States have reported serious symptoms, and an unpublished analysis of health records suggests use is growing, though available data have limitations. Testing of four products bought from Irish grey-market sellers found significant impurities in three, including a tanning product containing only 40% of the advertised peptide; experts also warn of contamination and infection risks. Researchers are developing regulated oral peptide medicines, but these remain distinct from unapproved products and face major delivery challenges. The Trump administration is moving toward allowing compounding pharmacies to produce some peptides that have not been FDA-approved, prompting concern that access may widen faster than evidence of safety and effectiveness.