Onyx Biolabs Premium Research Peptides USA BPC 157 TB 500 10mg 10mg FITSKNS Peptides Not all peptides are restricted. Here's the breakdown you actually need. The FDA's Category 2 classification affects specific compounded peptides BPC 157, TB 500, CJC 1295 Ipamorelin, AOD 9604, Epithalon, Selank, Semax. Others like Sermorelin BPC 157 vs. TB 500, CJC 1295, and More: Comparative Insights in Peptide Research