help me understand shortage list, I have read the wiki twice
Slightly embarrassed to be asking this, but: help me understand shortage list, I have read the wiki twice.
The intake asked me three questions and none of them were about my history. That told me everything I needed to know about the model.
Switched between two compounded preparations and the concentration on the label was different. Redid the arithmetic on paper before drawing anything.
Asked for the beyond-use date basis and got a real answer with a stability reference attached. Not universal, apparently.
Screenshot none of this. Read the whole thread, including the parts where I am told I am wrong.
best — the order this archive was captured in
Why "compounded" is not "generic", written out because the confusion is constant.
A generic is an approved product demonstrated to be bioequivalent to a reference. A compounded preparation is made for a patient or, in the case of an outsourcing facility, under a different regulatory route entirely. It carries no equivalence claim and it is not required to demonstrate one.
That is not a quality judgement. Plenty of compounded preparations are made carefully in facilities with real testing programmes. It is a statement about what has and has not been established, and the difference matters when people assume the two are interchangeable.
shortage status changes and the whole arrangement changes with it
Yes — asking which facility, by name, is the single most useful question and most clinics will answer it.
Cosigning the beyond-use date question. What it is based on tells you whether anybody has done stability work.
Careful. Naming a clinic without describing what actually happened turns this into a different kind of thread.
That figure is the starting material purity, not the finished preparation potency. Two different tests.
compounded is not generic, there is no equivalence claim
Why "compounded" is not "generic", written out because the confusion is constant.
This is the distinction the whole board runs on. Everything else follows from it.
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.
Agreed. The 503A versus 503B distinction changes who is allowed to make what, and almost every confused thread here starts by ignoring it.
Compounded preparations are not approved products and carry no bioequivalence claim. That is a statement about regulatory category, not about quality.
Same view. If the intake asked you nothing, the intake was a formality and you should factor that in.
What is the beyond-use date and what is it based on?
Compounded preparations are not approved products and carry no bioequivalence claim.
yannick_petrov is right about the concentration trap. It breaks arithmetic that has been reliable for months.
Asked which facility and got a name straight away. Looked it up, found the registration, felt considerably better about the whole thing.
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.
Reminder that nothing here is medical advice and this board cannot tell you which arrangement to choose.
Right, and the concentration genuinely can differ from the branded product, which breaks people’s arithmetic.
do not assume the concentration matches the branded product
This. Compounded preparations carry no equivalence claim, and treating them as generics is a category error people make constantly.
I would not read the price difference as a quality signal. Most of it is the consultation model, not the vial.
Agreed on potency testing of the finished preparation. That is a different question from the purity of the starting material.
Yes. The shortage list is the legal hinge for the whole arrangement and its status is public.
Yes.
Disagreeing with this bit: registration is not equivalence, and the two get run together constantly.
Reminder that nothing here is medical advice and this board cannot tell you which arrangement to choose.
Adding one thing — ask for the facility name. Most will give it, and the ones that will not have answered you.
the pharmacy and the prescriber are two separate questions
Who is the prescriber, and are they the same organisation as the pharmacy?
the API source is the question nobody asks and everybody should
ask which facility, then ask for their testing
- 1Salt form matters for mass: a preparation specified as one salt and dosed as…14 comments in this branch · started by u/zaid_grimaldi
- 2Why "compounded" is not "generic", written out because the confusion is…11 comments in this branch · started by u/usp_appendix