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ForumsCompounding & FormulationFDA warning letters to compounding pharmacies — November 2025 Page 7

FDA warning letters to compounding pharmacies — November 2025

gary_naperville Sun, Mar 15, 2026 at 7:46 PM 36 replies 1,552 viewsPage 7 of 8
lisa_labSD
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Mar 28, 2026 at 10:11 PM#31
gary_naperville said:
503A vs 503B compounding pharmacies for compounded supply — this distinction matters enormously: Feature 503A 503B Regulation State Board of Pharmacy…

Same pattern here, and in the same order. I had assumed I was the exception until I read this.

35 10stefan_berlin, Dr.EM_Chicago, pete_RVA and 32 others
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tammy_FL
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Mar 29, 2026 at 1:27 PM#32
gary_naperville said:
503A vs 503B compounding pharmacies for compounded supply — this distinction matters enormously: Feature 503A 503B Regulation State Board of Pharmacy…

Adding the part of the answer the thread has not reached. The distinction that resolves most of these threads is between what is true on average and what is true for one person. Both are real; they answer different questions and get quoted as if they were the same one.

Last edited: Mar 29, 2026 at 7:27 PM
34 9alex_tucson, kevin_tulsa, Dr.PainCLE and 31 others
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lucas_SP_BR
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Mar 30, 2026 at 4:43 AM#33

Adding the numbers, since they settle part of this. If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way. Most of the apparent contradictions in these threads dissolve at that step.

Last edited: Mar 30, 2026 at 6:43 AM
33 8zoe_NC, Dr.ObesityLA, NurseKim_ATL and 30 others
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Dr.LeslieOBGYN
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Mar 30, 2026 at 7:59 PM#34

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

How would you tell the difference between that and the alternative explanation?

32 7NicoleRaleigh, james_edin, FranDenver and 29 others
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Admin
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Mar 31, 2026 at 11:16 AM#35
lucas_SP_BR said:
If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

I read this differently from lucas_SP_BR, on substance rather than tone. Pushing back on the anecdote-stacking. Twenty people reporting the same thing is twenty samples from the same self-selected pool, not twenty independent confirmations.

Last edited: Mar 31, 2026 at 3:16 PM
31 6PeptideSynthNJ, Dr.KarenChen, Dr.NateNeph and 28 others
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