Category 1 vs. Category 2. The FDA's peptide update, explained. Category 2 peptides are on the FDA's difficult to compound list, which effectively blocks licensed pharmacies from producing them. Category 1 means FDA has removed certain bulk drug substances that were placed on the category two list and has announced it will consult the Pharmacy Compounding Advisory Committee (PCAC) for potential future inclusion of Peptide Compounding Pharmacy Physician Prescribed Peptides Massey Drugs When will the FDA reclassify BPC 157 to Category 1? Odds & Predictions FDA considers adding a dozen peptides to its bulk drug compounding list RAPS