Adding the clinical framing, because it changes how the question reads.

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 4 hours. They answered my questions about reconstitution thoroughly and professionally.

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

josh_phd_bmore said:

Beyond-use dating (BUD) for compounded supply compounded products: Lyophilized (unreconstituted): typically 9 months from compounding date…

Thank you — that is the clearest version of this I have read, and I have read a lot of them. Sending this to two other people who asked me the same thing last week.

Clinical perspective, offered as context rather than as advice.

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.

hyun_seoul said:

Compounded has been just as effective for me.

This matches mine closely enough to be worth saying so out loud. The detail I would add is minor and it is already implied above.

Moderator note: the sourcing question belongs in the vendor section and has been split out. Carry on.