Did the FDA accidentally create a black marketand now has to fix it? In 2023, certain peptides were restricted over safety concerns. Demand didn't stop. It moved underground. Research use only products. FDA Unbans 14 Peptides for Legal US Compounding! : r Biohackers GHK CU for Sale Tripeptide 1 3rd Party Tested US Made 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 What are GHK cu (Glycyl Histidyl Lysine Copper) injections? GHK Cu FDA Approval Status 2026: Not Approved