There is no single national 503A pharmacy list. These pharmacies are licensed state by state, so the most reliable place to find one is your State Board of Pharmacy, which maintains records of every pharmacy licensed to operate — and to compound — within its borders. Two voluntary accreditation directories and a conversation with your prescriber round out the search.
Before you start, make sure you’re looking for the right type of facility. A 503A pharmacy prepares customized medications for individual patients based on a specific prescription. A 503B outsourcing facility produces larger batches of sterile drugs without patient-specific prescriptions and registers with the FDA, which publishes a searchable list of registered 503B facilities.1Office of the Law Revision Counsel. 21 USC 353b – Outsourcing Facilities If your doctor has written you a prescription for something made specifically for you, you want a 503A pharmacy, and it won’t appear in the FDA’s 503B registry.
Start With Your State Board of Pharmacy
Every state board maintains a database of licensed pharmacies, and most offer an online license-verification portal. You can typically search by pharmacy name, license number, or location. These portals show whether a pharmacy is currently licensed, whether it holds any compounding-specific permits the state requires, and whether the board has taken disciplinary action against it.
The National Association of Boards of Pharmacy publishes a directory of every state board with contact information and direct links to each board’s website.2National Association of Boards of Pharmacy. Board of Pharmacy – Contact Your Board That saves you the trouble of hunting down your state’s board on your own.
When you contact the board or search its database, ask specifically about compounding authorization. Some states issue a general pharmacy license that covers compounding; others require a separate compounding permit or additional registration. The board can tell you which pharmacies in your area are authorized to compound and whether they carry any sterile-compounding designations. That last point matters if you need an injectable, infusion, or ophthalmic preparation, since sterile compounding requires clean-room facilities that not every 503A pharmacy has.
Search Voluntary Accreditation Directories
Two organizations accredit compounding pharmacies against standards that go beyond minimum state licensing requirements. Both publish searchable directories, and a listing in either is a meaningful quality signal.
PCAB, the Pharmacy Compounding Accreditation Board, is run by the Accreditation Commission for Health Care. PCAB accreditation verifies that a pharmacy complies with United States Pharmacopeia compounding standards, including the revised chapters covering sterile and nonsterile preparations and the enforceable hazardous-drug-handling standards. ACHC’s searchable directory of accredited organizations is on its website.3Accreditation Commission for Health Care, Inc. PCAB
NABP also runs its own Compounding Pharmacy Accreditation program, which evaluates alignment with USP standards and compliance with Section 503A requirements.4National Association of Boards of Pharmacy. NABP’s Compounding Pharmacy Accreditation Shows Your Pharmacy’s Alignment to USP Standards
Accreditation is voluntary, so plenty of good compounding pharmacies never pursue it. Use these directories alongside your state board’s records, not as a substitute.
Ask Your Prescriber
Physicians who routinely order compounded medications usually have working relationships with specific pharmacies. Your doctor can often point you to one they trust, and their recommendation carries practical weight since they’ll be sending the prescription there anyway. This is especially useful for specialized preparations like sterile injections, where a compounder needs the right equipment and clean-room facilities to fill the order safely.
Verify Before You Use It
Finding a licensed pharmacy is step one. Confirming that it operates safely is step two, and it takes only a few minutes.
Check Disciplinary History
Most state board license-verification portals flag disciplinary actions: license suspensions, fines, consent orders, or restrictions on compounding activities. If the online system doesn’t clearly display that information, call the board and ask about the pharmacy’s compliance history.
Search FDA Databases
State boards handle day-to-day oversight of 503A pharmacies, but the FDA can still inspect them and issue warning letters when it finds serious problems. The FDA maintains searchable inspection and warning-letter databases you can query by pharmacy name.5U.S. Food and Drug Administration. Search Databases It also publishes a page tracking compounding-specific inspections, recalls, and enforcement actions.6U.S. Food and Drug Administration. Compounding: Inspections, Recalls, and Other Actions A past warning letter doesn’t automatically mean a pharmacy is unsafe today, but it tells you the FDA found significant violations at some point, and you can check whether the pharmacy has since corrected them.
Red Flags
The FDA has identified several warning signs of non-compliant pharmacies, particularly those operating online:
- Any pharmacy offering to sell prescription medications without a doctor’s order is violating federal law.7U.S. Food and Drug Administration. Internet Pharmacy Warning Letters
- If the pharmacy can’t tell you where its ingredients come from or provide certificates of analysis, that’s a serious concern.
- Section 503A requires a licensed pharmacist or physician to supervise compounding. If you can’t identify who that person is, look elsewhere.8Office of the Law Revision Counsel. 21 USC 353a – Pharmacy Compounding
- Pharmacies advertising compounded versions of popular brand-name drugs at steep discounts may be producing copies of commercially available medications, which 503A pharmacies are prohibited from doing.
One useful question to ask any compounder you’re considering: does it follow current USP Chapter 795 (nonsterile), 797 (sterile), and 800 (hazardous drug) standards? Revised versions of 795 and 797 took effect in late 2023, and state boards have been increasing inspections against them.9USP – US Pharmacopeia (USP). USP General Chapter 79510US Pharmacopeia (USP). General Chapter 79711USP. USP 800 A pharmacy that can speak fluently about its compliance with these chapters is a pharmacy that takes them seriously.
Looking Beyond Your State
If the pharmacy you want is in another state, federal law limits how much a 503A pharmacy can ship across state lines. Under Section 503A, a pharmacy in a state that has not signed a Memorandum of Understanding with the FDA cannot distribute compounded drugs out of state in quantities exceeding 5 percent of its total prescription orders.8Office of the Law Revision Counsel. 21 USC 353a – Pharmacy Compounding
The FDA developed a standard MOU, in consultation with NABP, that would let signing states permit their pharmacies to distribute up to 30 percent of compounded units interstate before the amount is treated as “inordinate,” in exchange for the state agreeing to investigate complaints about compounded drugs shipped outside its borders and to notify the FDA of potential safety concerns within 72 hours.12Federal Register. Memorandum of Understanding Addressing Certain Distributions of Compounded Human Drug Products The FDA has repeatedly extended the deadline for enforcing the 5 percent limit while that process continues.13U.S. Food and Drug Administration. Memorandum of Understanding Addressing Certain Distributions of Compounded Drugs
In practice, most 503A pharmacies can currently ship compounded medications across state lines. If you plan to use an out-of-state compounder, confirm two things directly with the pharmacy: that it can legally ship to your state, and that it holds any nonresident-pharmacy license your state requires before receiving shipments from outside its borders.