BPC 157 has already hit the mainstream, but should it hit your bloodstream? Peptides are often well tolerated, but they can still cause temporary reactions while the body adapts. Some commonly reported effects include: BPC 157 headaches, nausea, increased appetite TB 500 BPC 157: The Secret Weapon for Injury Repair & Gut Health Desert Mobile Medical Desert Mobile Medical, PLC Is BPC 157 Banned? Oral vs. Injectable Forms Explained 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.