In 2023, the FDA deemed 19 peptides too unsafe to be dispensed by compounding pharmacies. Now, under RFK Jr., the agency is poised to reverse itself despite the fact that few Regulatory Alert: FDA's April 2026 Update on BPC 157 and GHK Cu Holt Law FDA to weigh easing limits on unproven peptides favored by RFK Jr. and MAHA supporters PBS News People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian