GHK Cu Peptide Regenerative & Cosmetic Research Regulatory Alert: FDA's April 2026 Update on BPC 157 and GHK Cu Holt Law GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026) 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 FDA Approval Status 2026: Not Approved GHK Cu Copper Tripeptide 1 Research Reagent