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ForumsCompounding & FormulationInternational compounding regulations — US vs EU vs AU comparison Page 2

International compounding regulations — US vs EU vs AU comparison

amsterdam_pete Wed, May 27, 2026 at 12:06 AM 6 replies 323 viewsPage 2 of 2
dave_SLC
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May 27, 2026 at 8:36 AM#6

The figures, for anyone assembling their own picture. Two things anyone can check: a state licence number for a 503A, and an FDA outsourcing-facility registration for a 503B. Both are publicly searchable, and a pharmacy unwilling to give you either has answered the question.

50 20mike_mealprep, NicoleRaleigh, james_edin and 47 others
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tom_AK
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May 27, 2026 at 11:57 AM#7

Following on from Dr.KarenChen — and this may be the naive question:

Why a shortage listing created a legal pathway at all, since a shortage is a supply fact rather than a permission?

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SarahChen_PharmD
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May 27, 2026 at 3:18 PM#8
dave_SLC said:
Two things anyone can check: a state licence number for a 503A, and an FDA outsourcing-facility registration for a 503B.

There is a second half to this that has not been said yet. The shortage clause is the answer to the second question and it is a subtraction rather than an addition. Both exemptions forbid compounding something that is essentially a copy of a commercially available approved product. A product FDA has listed as in shortage is not treated as commercially available, so listing removed the objection that otherwise blocked compounding. It never created a permission; it withdrew a prohibition, which is why it evaporated the moment the supply fact changed.

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amsterdam_pete
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May 27, 2026 at 6:40 PM#9

Reporting back.

The bulks-list asymmetry was the piece I had missed entirely. It explains why one of my two pharmacies is still arguing it can supply and the other simply stopped.

Last edited: May 28, 2026 at 12:40 AM
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FDA_TrackerJim
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May 28, 2026 at 10:48 AM#10
SarahChen_PharmD said:
The shortage clause is the answer to the second question and it is a subtraction rather than an addition.

Agreed, and the enforcement dates were staggered by category — 503A first, 503B a few weeks later — because outsourcing facilities have manufactured inventory and clinic contracts to unwind while a 503A makes to order.

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