Peptide Research Overview Mechanisms, Applications & Insights The FDA just changed the rules on peptides effective April 15, 2026. BPC 157, GHK Cu, MOTS C, and TB 500 have been removed from the Category 2 restricted compounding list. Here is what GHK CU Program Calibrate Hydration GHK Cu Mr & Mrs Peptides The FDA just changed the rules on peptides effective April 15, 2026. BPC 157, GHK Cu, MOTS C, and TB 500 have been removed from the Category 2 restricted compounding list. Here is what Are Peptides FDA Approved? 2026 Legal List & Classification of 14 Peptides