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 FDA Roundup: Oncology Drug Approvals in 2026 Cancer Therapy Advisor Peptides: FDA Approved vs Research Peptides Not all peptides are created equal Some are FDA approved medications with real clinical data, regulated manufacturing, and proven safety. Others are sold online as 2025's FDA approvals by regulatory designations