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c/compounding·posted 18 days ago by u/ahmed_okafor

[PSA] semaglutide salt forms are not the same molecule as semaglutide

PSA Long Haul ×5 Slow Clap ×1

Explainer, as requested in the last thread: semaglutide salt forms are not the same molecule as semaglutide.

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

Concentration on the compounded vial was different from what I had been using and I nearly did the arithmetic on autopilot.

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.

Ask me anything specific. Anything general I will probably get wrong.

1,801 up / 61 down97% upvoted38 commentsid 1otk8q12 Jul 2026

38 comments

6 in this archive, depth 2

best — the order this archive was captured in

u/marit_mwangi171 points·16 days 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/food_noise_gonemaintenance93 points·17 days ago

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

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u/prior_auth_painMOD56 points·17 days ago

Reminder that nothing here is medical advice and this board cannot tell you which arrangement to choose.

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u/ruben_cabrera90 points·17 days ago

Who is the prescriber, and are they the same organisation as the pharmacy?

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u/formulary_fighterappeals54 points·17 days ago

Who is the prescriber, and are they the same organisation as the pharmacy?

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

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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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