EndoResFellow said:

Compounding pharmacy response time test for compounded supply: I email customer service at odd hours to test responsiveness.

Compounded has been just as effective for me. If compounded supply is the concern, the COA from my 503B pharmacy shows 99.1% purity. Verified by Janoshik.

Dr.NephBHM_UK said:

Worth adding the genuine exception, because it is real and narrow: a change made for an identified patient where the prescriber determines it produces…

Thank you — that is the clearest version of this I have read, and I have read a lot of them. Taking it to my next appointment.

EndoResFellow said:

Compounding pharmacy response time test for compounded supply: I email customer service at odd hours to test responsiveness.

GMP compliance checklist relevant to compounded supply compounding quality:

• Clean room environment with HEPA filtration
• Environmental monitoring (viable and non-viable)
• Personnel training and competency assessment
• Validated analytical methods for testing
• Stability testing program
• Complete batch records and traceability
• Quality management system with deviation handling

A 503B pharmacy following cGMP should be able to answer questions about ALL of these if you ask. Don't be afraid to ask — it's your health.

hannah_MT said:

Two pharmacies quoted me last year, one describing itself as 503A and one as 503B, and I assumed 503B just meant bigger until both stopped within…

I have been on both brand and compounded, and in the context of compounded supply, my experience has been equivalent with both. The key is finding a reliable 503B pharmacy with independent testing.

Moderator note: reminder that nothing in this thread is medical advice, and that clinical claims need a source. Tagging this one for the weekly digest.