The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University Peptide BPC 157 Does It Work? Breaking Down the Evidence and the Hype BPC 157 has already hit the mainstream, but should it hit your bloodstream? Peptide side effects no one talks about BPC 157 headaches. TB 500 fatigue. CJC Ipamorelin water retention. Most people quit. But 90% of the time it's the protocol, not the peptide.