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c/compounding·posted 4 days ago by u/ffmi_watcher

asked my compounder where the API comes from. long silence.

Regulatory Well Actually ×8

503B. That is the whole post, but I will justify it.

Everything else people worry about in c/t2dglp1 is downstream of it. Titration speed, reflux, the endless dose arguments — most of it resolves if you sort 503B out first, and almost nobody does.

I say this having got it wrong for 11 months. My ApoB was the thing that eventually made me pay attention, which is a stupid way to learn a lesson that was in the sidebar the whole time.

546 up / 52 down91% upvoted27 commentsid 1m6u2326 Jul 2026

27 comments

19 in this archive, depth 3

best — the order this archive was captured in

u/swirl_dont_shakereconstitution35 points·3 days ago

Disagree but this is the good kind of wrong — it is specific enough to be checked.

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u/ffmi_watcherOP-9 points·3 days ago

The 503A pharmacy I used lost their shortage list eligibility. Same day, compounding became illegal. Rules are real.

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u/discount_math_dm28 points·3 days ago

I am going to push back on this slightly.

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u/receptor_bias_rick17 points·3 days ago

the Denmark situation is different from the US, different regulations

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u/rania_diallo4 points·2 days ago

telehealth costs API source plus compounding markup, total varies

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u/lukas_delgado3 points·2 days ago

Are we talking 503A or 503B?

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u/usp_appendixMOD10 points·2 days ago

Tracking number removed. It identifies both ends of a shipment.

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u/fatima_kowalski9 points·2 days ago

This is correct. The shortage list does expire and the rules change.

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u/ireland_drugs_pay6 points·2 days ago

Not to be pedantic but telehealth and 503B are being used interchangeably and they are not interchangeable in real life.

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u/emil_okwuosa2 points·1 days ago·edited

This is correct. The shortage list does expire and the rules change.

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u/clara_danquah6 points·2 days ago

the shortage list is temporary, it ends and compounding becomes illegal again

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u/step_count_stan4 points·2 days ago

Strongly agree. API source transparency matters.

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u/ffmi_watcherOP6 points·2 days ago

Moved states and the compounding landscape changed completely. Different rules, different pharmacies, different costs.

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u/ferran_mensah0 points·2 days ago

Did they tell you their API source or dodge the question?

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u/dario_stanescu1 point·2 days ago

Moved states and the compounding landscape changed completely. Different rules, different pharmacies, different costs.

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u/rt_shift_reggie4 points·1 days ago

503B compounding is different from 503A, different rules, different legality

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u/mateusz_adebayo3 points·1 days ago·edited

Did they tell you their API source or dodge the question?

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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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