People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian 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 What are peptides? The treatments promising weight loss and better skin, explained Vox Regulatory Alert: FDA's April 2026 Update on BPC 157 and GHK Cu Holt Law