BPC 157 and Regenerative Peptides: What Actually Matters Peptides are short chains of amino acids that have many functions in the human body. Learn about the different types of peptides and how they're used to manage some health conditions. Click Peptides for Recovery: TB500 vs BPC 157 vs Copper 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