pepi.ninja — RegulatoryIndependent coverage of peptide research and FDA compounding policy.https://pepi.ninja/503A vs 503B: how peptides get compounded in the UShttps://pepi.ninja/regulatory/503a-vs-503b/https://pepi.ninja/regulatory/503a-vs-503b/Sun, 03 May 2026 00:00:00 GMTBPC-157: how it got to PCAChttps://pepi.ninja/regulatory/bpc-157-regulatory-history/https://pepi.ninja/regulatory/bpc-157-regulatory-history/Sun, 03 May 2026 00:00:00 GMTDEA scheduling vs FDA approval: what's the difference for peptideshttps://pepi.ninja/regulatory/dea-scheduling-vs-fda-approval/https://pepi.ninja/regulatory/dea-scheduling-vs-fda-approval/Sun, 03 May 2026 00:00:00 GMTDihexa acetate: how it got to PCAChttps://pepi.ninja/regulatory/dihexa-regulatory-history/https://pepi.ninja/regulatory/dihexa-regulatory-history/Sun, 03 May 2026 00:00:00 GMTDSIP / Emideltide: how it got to PCAChttps://pepi.ninja/regulatory/dsip-regulatory-history/https://pepi.ninja/regulatory/dsip-regulatory-history/Sun, 03 May 2026 00:00:00 GMTEpitalon: how it got to PCAChttps://pepi.ninja/regulatory/epitalon-regulatory-history/https://pepi.ninja/regulatory/epitalon-regulatory-history/Sun, 03 May 2026 00:00:00 GMTFDA's history of nominating bulk substances for compoundinghttps://pepi.ninja/regulatory/fda-bulk-substance-nominations-history/https://pepi.ninja/regulatory/fda-bulk-substance-nominations-history/Sun, 03 May 2026 00:00:00 GMTGHK-Cu: how it got to PCAChttps://pepi.ninja/regulatory/ghk-cu-regulatory-history/https://pepi.ninja/regulatory/ghk-cu-regulatory-history/Sun, 03 May 2026 00:00:00 GMTKPV: how it got to PCAChttps://pepi.ninja/regulatory/kpv-regulatory-history/https://pepi.ninja/regulatory/kpv-regulatory-history/Sun, 03 May 2026 00:00:00 GMTCathelicidin / LL-37: how it got to PCAChttps://pepi.ninja/regulatory/ll-37-regulatory-history/https://pepi.ninja/regulatory/ll-37-regulatory-history/Sun, 03 May 2026 00:00:00 GMTMelanotan II: how it got to PCAChttps://pepi.ninja/regulatory/melanotan-ii-regulatory-history/https://pepi.ninja/regulatory/melanotan-ii-regulatory-history/Sun, 03 May 2026 00:00:00 GMTMOTs-C: how it got to PCAChttps://pepi.ninja/regulatory/mots-c-regulatory-history/https://pepi.ninja/regulatory/mots-c-regulatory-history/Sun, 03 May 2026 00:00:00 GMTPCAC July 23, 2026: Four peptides under review (preview)https://pepi.ninja/regulatory/pcac-july-23-2026-preview/https://pepi.ninja/regulatory/pcac-july-23-2026-preview/Sun, 03 May 2026 00:00:00 GMTPCAC July 24, 2026: Three peptides under review (preview)https://pepi.ninja/regulatory/pcac-july-24-2026-preview/https://pepi.ninja/regulatory/pcac-july-24-2026-preview/Sun, 03 May 2026 00:00:00 GMTPEG-MGF: how it got to PCAChttps://pepi.ninja/regulatory/peg-mgf-regulatory-history/https://pepi.ninja/regulatory/peg-mgf-regulatory-history/Sun, 03 May 2026 00:00:00 GMTPeptides as drugs vs research chemicals: the legal distinctionhttps://pepi.ninja/regulatory/peptides-drugs-vs-research-chemicals/https://pepi.ninja/regulatory/peptides-drugs-vs-research-chemicals/Sun, 03 May 2026 00:00:00 GMTReading FDA briefing documents: a primerhttps://pepi.ninja/regulatory/reading-fda-briefing-documents/https://pepi.ninja/regulatory/reading-fda-briefing-documents/Sun, 03 May 2026 00:00:00 GMTSemax: how it got to PCAChttps://pepi.ninja/regulatory/semax-regulatory-history/https://pepi.ninja/regulatory/semax-regulatory-history/Sun, 03 May 2026 00:00:00 GMTTB-500: how it got to PCAChttps://pepi.ninja/regulatory/tb-500-regulatory-history/https://pepi.ninja/regulatory/tb-500-regulatory-history/Sun, 03 May 2026 00:00:00 GMTWhat happens when PCAC says yes / no / abstainhttps://pepi.ninja/regulatory/what-happens-when-pcac-decides/https://pepi.ninja/regulatory/what-happens-when-pcac-decides/Sun, 03 May 2026 00:00:00 GMTWhat is the PCAC?https://pepi.ninja/regulatory/what-is-the-pcac/https://pepi.ninja/regulatory/what-is-the-pcac/Sun, 03 May 2026 00:00:00 GMT