A narrower follow-up, since the general answer is now clear:

Did your prescriber agree with that reading, and if not what was their objection?

EndoResFellow ↑ said:

Compounding pharmacy licensing verification for compounded supply: before ordering, verify your pharmacy's credentials: State Board of Pharmacy…

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

Lyophilized (unreconstituted): typically 6 months from compounding date
Reconstituted with BAC water: typically 28-30 days refrigerated
Reconstituted with sterile water: typically 24 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.

EndoResFellow ↑ said:

Compounding pharmacy licensing verification for compounded supply: before ordering, verify your pharmacy's credentials: State Board of Pharmacy…

FDA inspection results for compounding pharmacies selling compounded supply: you can look up any 503B facility's FDA inspection history on the FDA website.

Check for: Form 483 observations (violations), warning letters, and recall history. A clean inspection record is a strong indicator of quality. My pharmacy has had 1 Form 483 observations in their last 2 inspections.

This is public information. Use it. Link: fda.gov/inspections-compliance-enforcement-and-criminal-investigations

Moderator note: good thread. Keeping it here rather than moving it, because the question is general enough to be useful.