503A vs 503B compounding pharmacies
503A and 503B are United States compounding categories. This page uses the licence line each pharmacy states on Compound Labs. It is not a rating.
The difference
- A 503A pharmacy compounds against a prescription for a named patient and is regulated by its state pharmacy board. A 503B outsourcing facility registers with the FDA, follows current good manufacturing practice (cGMP) and can supply clinics with stock for use in the office. Several firms hold both.
- On 23 and 24 July 2026 an FDA advisory committee voted to add six peptides, including BPC-157, to the 503A bulks list. Those votes are not binding until the FDA completes rulemaking. AJMC: FDA panel backs 6 peptides for compounding.
- None of the 29 compounding pharmacies listed has BPC-157 or TB-500 in the peptides this directory shows for it. Australian listings do not show peptide names at all.
Both a 503A pharmacy and a 503B facility (4)
- Belmar Pharma Solutions. Operates 503A and 503B facilities. Lists NABP and LegitScript.
- Empower Pharmacy. Operates a 503A pharmacy and a 503B outsourcing facility, and says it is registered with the FDA as a 503B and accredited by PCAB (company claims).
- Olympia Pharmacy. Operates a 503A pharmacy and a 503B outsourcing facility. Lists LegitScript and NABP.
- Wells Pharmacy Network. Operates 503A and 503B facilities. Says it is accredited by PCAB (company claim).
503A pharmacy (2)
- Hallandale Pharmacy. 503A pharmacy. Lists PCAB and LegitScript.
- Strive Pharmacy. 503A pharmacy. Lists NABP, PCAB and LegitScript.
503B outsourcing facility (2)
- QuVa Pharma. FDA-registered 503B outsourcing facility.
- SCA Pharmaceuticals. 503B outsourcing facility working to cGMP.
Other countries
- 503A and 503B are not the categories used for the UK, Australia or Europe listings. Those pages use each country’s own licence. All Compound Labs.
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