Sourcing.
Where does your medication come from? How to verify your 503A or 503B pharmacy source and ensure clinical safety.
503A Pharmacies
State-licensed compounding pharmacies that produce patient-specific prescriptions. Verified by State Boards of Pharmacy.
503B Facilities
FDA-registered "Outsourcing Facilities" that compound in large batches for office-use. Strictly monitored for cGMP standards.