Peptide BPC 157 Does It Work? Breaking Down the Evidence and the Hype 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. All the hype about peptides But what are they actuallyand have they really been tested in humans for muscle building or tendon regeneration? We took a deep dive into the literature What is BPC 157? Everything to know about this peptide