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: Experimental Peptide Creates Risk for Athletes Early evidence suggests BPC 157 repairs tissue rather than just dulling symptoms. To read more, tap the link in bio. BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence