FDA Targets GLP 1 and Peptide Compounding, Advertising and 'Research Use Only' Labeling 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 Is BPC 157 Banned? Oral vs. Injectable Forms Explained FDA Peptide Update: Category 2 Removals Explained