Clinical perspective, offered as context rather than as advice.

Beyond-use dating (BUD) for compounded supply compounded products:

Lyophilized (unreconstituted): typically 12 months from compounding date
Reconstituted with BAC water: typically 28-30 days refrigerated
Reconstituted with sterile water: typically 48 hours (no preservative!)

Always use BAC water for multi-dose vials. Sterile water has no preservative and supports bacterial growth after first puncture. This is a common and potentially dangerous mistake.

Dr.ObesityMed said:

Beyond-use dating (BUD) for compounded supply compounded products: Lyophilized (unreconstituted): typically 12 months from compounding date…

Compounding pharmacy response time test for compounded supply: I email customer service at odd hours to test responsiveness. A pharmacy that can't answer questions promptly is a red flag.

My current pharmacy: average response time same day. They answered my questions about sterility testing thoroughly and professionally.

Communication quality is a proxy for operational quality. A pharmacy that communicates well is likely manufacturing well too.

Dr.ObesityMed said:

Beyond-use dating (BUD) for compounded supply compounded products: Lyophilized (unreconstituted): typically 12 months from compounding date…

Compounding pharmacy customer here with experience relevant to compounded supply.

I've ordered from 5 different compounding pharmacies over the past 18 months. The quality variation is real — purity ranged from 94% to 101% of label claim based on independent Janoshik testing.

My current compounder (a 503B facility) has been consistently 98-101% purity across 5 orders. I pay $120/month vs $1,310 for brand. The savings are substantial and the product is equivalent in my experience.

Re: compounded supply — this applies whether you're using brand or compounded. The clinical principles are the same.

Dr.ObesityMed said:

Beyond-use dating (BUD) for compounded supply compounded products: Lyophilized (unreconstituted): typically 12 months from compounding date…

Saving this. It is the first explanation that did not require me to already understand it.

Moderator note: reminder that nothing in this thread is medical advice, and that clinical claims need a source.