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c/compounding·posted 2 years ago by u/yannick_barros

[Question] Denmark — has anyone got a straight answer on 503B

Question Receipts ×3

Genuine question, and the title is the question: Denmark — has anyone got a straight answer on 503B.

The shortage list is the legal hinge: the permissions that allow certain compounding to happen at scale are tied to a drug’s shortage status, which changes.

Compounded preparations are not approved products and carry no bioequivalence claim. That is a statement about regulatory category, not about quality.

A 503A pharmacy compounds for an identified patient against a prescription. A 503B outsourcing facility registers with the regulator, may produce without patient-specific prescriptions, and is subject to current good manufacturing practice requirements. The two are governed differently and the difference is not cosmetic.

Not medical advice, obviously, and nothing here is approved for human use. One person with a spreadsheet.

987 up / 261 down79% upvoted32 commentsid k0c2of25 Feb 2024

32 comments

20 in this archive, depth 5

best — the order this archive was captured in

u/mikkel_correia-1 point·2 years ago

Salt form matters for mass: a preparation specified as one salt and dosed as the free base gives you a different amount of peptide for the same number on the label.

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u/hassan_chowdhury1 point·2 years ago

Salt form matters for mass: a preparation specified as one salt and dosed as the free base gives you a different amount of peptide for the same number

Agreed — and the follow-up question is what the beyond-use date is based on.

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[deleted]1 point·2 years ago

[deleted]

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u/lift_heavy_thingsresistance training1 point·2 years ago

the label on a compounded vial is a legal document, read it

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u/yannick_barrosOP1 point·2 years ago

a 503B has to register and report, so there is a paper trail to ask for

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u/stubborn_batchlist_pls1 point·2 years ago

a 503B has to register and report, so there is a paper trail to ask for

Disagreeing with this bit: registration is not equivalence, and the two get run together constantly.

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u/ahmed_fonseca1 point·2 years ago

a telehealth intake that asks nothing has told you what it is

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u/dario_stanescu1 point·2 years ago

Asked for the beyond-use date basis and got a real answer with a stability reference attached. Not universal, apparently.

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u/helga_vermeulen1 point·2 years ago

ask which facility, then ask for their testing

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u/swirl_dont_shakereconstitution1 point·2 years ago

Small fix — 503B facilities register with the regulator; 503A pharmacies are licensed by the state board. Different mechanisms.

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u/solene_eriksen92 points·2 years ago

Potency and sterility testing on the finished preparation are separate from any certificate covering the starting material. Ask which you are being shown.

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u/ahmed_okafor76 points·2 years ago

Nothing in this thread is medical advice, and the choice between arrangements is one for you and a prescriber who knows your history.

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u/solene_eriksen18 points·2 years ago

Switched between two compounded preparations and the concentration on the label was different. Redid the arithmetic on paper before drawing anything.

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u/usp_appendixcompendial22 points·2 years ago

A beyond-use date derived from published stability data means something different from one assigned by default rule. Asking which is a fair question and the answer is usually available.

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u/ismael_pires5 points·2 years ago

ask what the beyond-use date is based on

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u/rania_diallo15 points·2 years ago

Disagree — a 503B being registered does not make its preparations equivalent to an approved product. Different regulatory category entirely.

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u/camila_mensa10 points·2 years ago

Not convinced. You are comparing a compounded concentration with a branded one and assuming they match.

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u/kavya_kravchenko8 points·2 years ago

shortage status changes and the whole arrangement changes with it

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u/eu_apotheke_a7 points·2 years ago

potency testing on the finished preparation is the thing to ask for

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u/lift_heavy_thingsresistance training64 points·2 years ago·edited

the price difference is mostly the intake, not the vial

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About c/compounding

Compounded GLP-1s as a supply route: the 503A/503B distinction, the shortage-list mechanics that made compounding legal and then didn't, state board rules, telehealth prescriber models, and what a compounding pharmacy will and will not tell you about its API source.

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