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c/tirzepatide·posted 3 months ago by u/kaia_wojcik

[Lab] split one vial across Janoshik and Medutest — 99.2% and 96.2%

Lab Clean Column ×4 Well Actually ×3 Slow Clap ×3

split one vial across Janoshik and Medutest — 99.2% and 96.2%. One vial, one service, one member paying, which is the only kind of result this board should treat as evidence.

99.2% and 96.2% — those are the numbers, and they are the ones I am willing to defend.

SURMOUNT-1 ran 72 weeks with the top arm around 21% mean body weight change. SURPASS is the diabetes programme and reports glycaemic endpoints, so quoting the two interchangeably is a category error.

The four-week interval in the label is a minimum. Nothing about the pharmacology requires you to step on schedule, and the trials stepped on a calendar because trials have to.

Sceptical readings welcome. The confident ones are the ones I distrust.

8,786 up / 3,154 down74% upvoted28 commentsid 1sd0zx26 Apr 2026

28 comments

17 in this archive, depth 5

best — the order this archive was captured in

u/amara_halonen0 points·3 months ago

Research-use-only material is not approved for human use. Anything in this thread about how a research vial "should" titrate is a discussion about chemistry, not a plan.

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u/kaia_wojcikOP1 point·3 months ago·edited

Research-use-only material is not approved for human use.

amara_halonen is right that the two molecules are not interchangeable. There is no published conversion and the ones circulating are invented.

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u/sanne_novak1 point·3 months ago

Which week did the appetite change actually land for you?

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u/forest_plot_fionastats1 point·3 months ago

Small fix: SURMOUNT is the obesity programme, SURPASS is the type-2 programme. They are different endpoints and the numbers do not transfer.

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u/mikkel_kimani1 point·3 months ago

switching from sema is not a dose conversion, there is no clean equivalence

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u/adnan_nascimento1 point·3 months ago

The thing nobody warned me about was how much of this is logistics — storing it, remembering it, the same day every week.

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u/ingrid_correia1 point·3 months ago·edited

2.5mg is a four-week starting dose, not a maintenance dose. Worth being precise since people search these threads.

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u/ferran_mensah371 points·3 months ago

Came off sema and onto tirz with a two-week gap. The first month was flat and I assumed I had made a mistake. Month two it moved.

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u/tarek_kirchner130 points·3 months ago

Are you comparing yourself with the trial mean or with the people who post the most?

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u/nabila_ogunleye99 points·3 months ago

dual agonist, so the GIP arm is doing something the sema threads will not tell you about

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u/customs_seizure_sid-2 points·3 months ago

Does constipation follow the day after the shot, or is it spread across the week?

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u/emil_wojcik0 points·3 months ago

Does constipation follow the day after the shot, or is it spread across the week?

Agreed, with one qualifier: that is the mean of the top arm and the spread around it was enormous.

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u/quiet_moderatorMOD260 points·3 months ago

Removed the conversion table. There is no published equivalence between the two molecules and posting one as fact is exactly the kind of thing that gets copied for years.

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u/kaia_wojcikOP0 points·3 months ago

What step are you on and how long have you been there?

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u/kaia_wojcikOP1 point·3 months ago

That percentage is body weight change, not body fat. Different measurement, and the distinction gets lost every time.

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u/nabila_ogunleye124 points·3 months ago

Cosigning the four-week thing. It is a minimum interval, and treating it as a schedule to keep up with is how people end up miserable at 12.5.

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u/cormac_pereira98 points·3 months ago

pens and vials are the same molecule, the price is the difference

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About c/tirzepatide

Tirzepatide-specific discussion: the dual-agonist pharmacology, the 2.5 → 15mg ladder, the appetite profile people describe as different from semaglutide, and the SURMOUNT/SURPASS trial programme. Comparisons with semaglutide are welcome as long as they are specific about dose equivalence being unknown.

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