Deep Dive: Regulatory Status of Popular Compounded Peptides Holt Law RFK Jr.'s peptide push could unleash risky drugs STAT First Opinion Everyone online is suddenly injecting peptides. But almost nobody understands the scienceor the regulation. The FDA recently shifted several peptides off the Category 2 safety risk list tied to compounding rules. First, that The FDA just announced that they're taking steps to lift restrictions on 12 peptides including BPC 157 and TB 500 making them accessible through compounding pharmacies again. This is a HUGE step