Buy GHK Cu 50mg & 100mg Copper Tripeptide Koi 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 Regulatory Alert: FDA's April 2026 Update on BPC 157 and GHK Cu Holt Law 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 Wholesale Pricing