BPC 157 is one of the most unique peptides naturally found in the gut and effective both orally and by injection., Oral supports gut health, while the injectable version helps with healing and The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University BPC 157 has already hit the mainstream, but should it hit your bloodstream? Pentadecapeptide BPC 157 efficiently reduces radiation induced liver injury and lipid accumulation through Kruppel like factor 4 upregulation both in vivo and in vitro ScienceDirect