The bulks list is the central FDA mechanism that governs which active pharmaceutical ingredients compounding pharmacies and outsourcing facilities can use. Two lists exist. The 503A bulks list applies to traditional compounding pharmacies that prepare patient-specific prescriptions; substances must be reviewed and approved by the Pharmacy Compounding Advisory Committee (PCAC) before formal addition. The 503B bulks list applies to FDA-registered outsourcing facilities that prepare batches without patient-specific prescriptions; the standard is 'clinical need' for bulk compounding to be permitted.
The peptide story runs across both lists in 2026. On the 503A side, seven peptides came off the FDA's Category 2 'do not compound' list effective April 23 and go to a PCAC vote on July 23-24 (BPC-157, KPV, TB-500, MOTS-c on Day 1; Emideltide/DSIP, Semax, Epitalon on Day 2). On the 503B side, the FDA proposed on April 30 (Federal Register notice May 1, docket 2026-08552) to permanently exclude semaglutide, tirzepatide, and liraglutide from the 503B bulks list, with the public comment window closing June 29. Once finalized, large-scale compounded GLP-1 distribution through outsourcing facilities ends.
Stories tagged here cover individual substance reviews, FDA Federal Register notices, PCAC meeting outcomes, and the underlying regulatory mechanics. See [[503a]], [[503b]], [[pcac]], and [[peptide-compounding]] for adjacent threads.
Registration for oral testimony at the FDA Pharmacy Compounding Advisory Committee meeting on July 23-24, 2026 closed at the end of business Tuesday June 30, 2026. Individuals or organizations who wanted to give a formal oral presentation at the public-comment portion of the meeting had to notify FDA by today with a brief description of the evidence or arguments to be presented, names and addresses of participants, in-person versus virtual preference, and a requested time allotment. Written comments to docket FDA-2025-N-6895 at regulations.gov remain open through July 9, 2026 for formal provision to PCAC members ahead of the meeting; the hard deadline for all written comments is July 22, 2026 at 11:59 PM ET. The two-day meeting at FDA's White Oak campus in Silver Spring, Maryland (with virtual attendance option) reviews seven peptides for 503A bulks list eligibility: BPC-157, KPV, TB-500, and MOTS-c on Day 1 (July 23); Emideltide (delta sleep-inducing peptide / DSIP), Semax, and Epitalon on Day 2 (July 24). Oral-testimony filers will face the FDA career-staff briefing documents released this week concluding the evidence is insufficient on all seven substances.
The FDA's public comment window on the proposed permanent exclusion of semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound), and liraglutide (Victoza, Saxenda) from the 503B bulks list closes Monday June 29, 2026 at 11:59 PM ET. The proposal (Federal Register notice May 1, docket 2026-08552) cited 'no clinical need' for outsourcing facilities to compound these drugs from bulk substances given commercial availability of the branded products. The final-comment filers split along expected lines. National Community Pharmacists Association (NCPA) and Alliance for Pharmacy Compounding (APC) argue for retention given continuing patient-access gaps for high-cost branded supply, particularly in rural and underserved markets where Hims & Hers and LifeMD telehealth penetration is lower. Partnership for Safe Medicines and the FDA's CDER drug safety arm support the exclusion, citing more than 455 adverse event reports linked to compounded semaglutide and 320+ reports tied to compounded tirzepatide as of early 2025, with a large fraction involving patient self-dosing errors from multidose vials. The FDA will publish its final determination in the Federal Register within several months of comment closure. Once finalized, large-scale compounded GLP-1 distribution through 503B outsourcing facilities ends; patient-specific 503A compounding may continue under narrow circumstances.
Registration for oral testimony at the FDA Pharmacy Compounding Advisory Committee (PCAC) meeting on July 23-24, 2026 closes Tuesday June 30, 2026 — one day from this Monday digest. The two-day meeting at the FDA White Oak campus in Silver Spring, Maryland (with virtual attendance option) will vote on 503A bulks list eligibility for seven peptides: BPC-157, KPV, TB-500, and MOTS-c on Day 1 (July 23); Emideltide (delta sleep-inducing peptide / DSIP), Semax, and Epitalon on Day 2 (July 24). Pharmacist-facing guidance in Pharmacy Times (Annie Lambert, PharmD, BCSCP, Wolters Kluwer clinical program manager for compliance solutions, published two days ago) advised compounding pharmacies to prepare for the post-PCAC market regardless of which specific peptides receive affirmative votes. Written comments to docket FDA-2025-N-6895 remain open through July 22 at 11:59 PM ET. The seven peptides came off the FDA's Category 2 'do not compound' list effective April 23, 2026; PCAC affirmative votes plus FDA acceptance are needed for formal 503A bulks list addition. Hims & Hers (HIMS), LifeMD, Henry Meds, and the broader telehealth-peptide platform space have priced in some affirmative outcomes (Barclays $39 HIMS PT, June 17; Leerink Market Perform reiteration this past week).
The FDA's public comment window on the proposed permanent exclusion of semaglutide (Ozempic, Wegovy), tirzepatide (Mounjaro, Zepbound), and liraglutide (Victoza, Saxenda) from the 503B bulks list closes Monday June 29, 2026, one day from this Sunday digest. The FDA proposed the exclusion on April 30 via a Federal Register notice published May 1 (docket 2026-08552), citing 'no clinical need' for outsourcing facilities to compound these drugs from bulk substances given commercial availability of the branded products. Once the comment window closes and the FDA finalizes the determination, large-scale compounded GLP-1 distribution through 503B outsourcing facilities effectively ends. Patient-specific compounding through 503A pharmacies may continue under narrow circumstances (drug-shortage triggers, patient-specific clinical needs documented by the prescribing physician), but the bulk-compounding channel that supplied the 2022-2024 shortage-era compounded GLP-1 wave gets formally closed. The Partnership for Safe Medicines and FDA's CDER drug safety arm welcomed the proposal; compounding-pharmacy industry groups (APC, OFA) filed comments arguing for retention given continuing patient-access gaps for high-cost branded supply.
With EASL and ASCO dominating the clinical-data cycle, the FDA peptide-compounding regulatory track continues moving toward the July 23-24, 2026 Pharmacy Compounding Advisory Committee (PCAC) meeting. Twelve peptides came off the FDA Category 2 'significant safety risk' bulks list effective April 23, 2026; seven of those (BPC-157, TB-500, KPV, MOTs-C on Day 1; Emideltide/DSIP, Semax, Epitalon on Day 2) advance to the July PCAC for affirmative 503A bulks-list inclusion. A second PCAC before end of February 2027 reviews five more (GHK-Cu injectable, Melanotan II, Cathelicidin LL-37, Dihexa, PEG-MGF). Removal from Category 2 does not yet permit compounding — that requires the affirmative PCAC recommendation plus FDA final determination (6-12 month timeline). The parallel 503B bulks-list proposal excluding semaglutide, tirzepatide, and liraglutide closes public comments June 29. The compounded-semaglutide shipment volume is down 90% year-over-year per the BSR Intelligence briefing as the regulatory vise tightens on the gray-market segment.
The Pharmacy Compounding Advisory Committee meeting on July 23-24, 2026 — at which seven peptides (BPC-157, KPV, TB-500, MOTs-C on Day 1; Emideltide/DSIP, Semax, Epitalon on Day 2) will be discussed for 503A compounding inclusion — now has firm public-comment deadlines. Written submissions are due July 9, 2026 via regulations.gov; oral presentation requests close June 30, with the FDA allocating presentation slots after review. The PCAC review follows the April 23, 2026 effective date when 12 peptides came off the FDA's Category 2 bulks list. Industry stakeholders, patient groups, and clinicians are organizing through the SSRPi network and the Alliance for Pharmacy Compounding to coordinate testimony. The combined regulatory cycle — PCAC plus the parallel April 30 503B bulks-list proposal closing June 29 — will reshape the compounding-pharmacy economy through 2027 and determine which research peptides remain accessible through licensed channels.