East Coast Compounding Blog

Answers to common questions about compounded medications, prescriptions, and how a 503A pharmacy works.

503A vs 503B Compounding Pharmacies: What's the Difference?

How 503A compounding pharmacies and 503B outsourcing facilities differ: federal law, oversight, prescriptions and who each one serves. Sourced to the FDA.

September 30, 2026

No articles in this topic yet. More are on the way.

Have Questions About a Compounded Prescription?

Reading is a good start. Talk to a pharmacist at our Jacksonville pharmacy, or send us a prescription if you're a prescriber.

Contact Our Pharmacy Call (904) 648-2262 Become a Provider

Accessibility by WAH

Call Us Text Us

East Coast Compounding Blog

503A vs 503B Compounding Pharmacies: What's the Difference?

Have Questions About a Compounded Prescription?

Accessibility Tools