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 Recovery Peptide Blend (BPC 157 TB 500 KPV) in Houston Huemn Healing Peptide Therapy TB 500 and BPC 157: Core Peptides Highlights Peptide Synergy for Recovery, Regeneration, and Cellular Support Simultaneous quantification of TB 500 and its metabolites in in vitro experiments and rats by UHPLC Q Exactive orbitrap MS MS and their screening by wound healing activities in vitro ScienceDirect TB 500 & TB 4: Everything You Need to Know Benefits, Risks, Dosing, & vs BPC 157