Peptides seem to be everywhere right now., Weve been looking into a few, like copper peptides, BPC 157, and TB500, mostly from a recovery and skin support standpoint. Still learning, still observing, BPC 157 for athletes and injury treatment: Science, safety, and legal concerns 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. BPC 157 vs TB 500 Peptide Which is Better for Injury Healng?