FDA Action Update, January 2026: Approvals, Acceptance, and Clearance NeurologyLive Clinical Neurology News and Neurology Expert Insights GHK Cu Copper Tripeptide 1 Research Reagent GHK CU Program Calibrate Hydration 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 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