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c/tirzepatide·posted 2 months ago by u/ghrp_history

[Discussion] we are measuring Zepbound at the wrong time and calling it noise

Discussion Long Haul ×3 Well Actually ×1

Thinking out loud about this: we are measuring Zepbound at the wrong time and calling it noise.

Went 10 to 12.5 on the calendar and had the worst fortnight of the whole run. Dropped back to 10 and everything settled.

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

Appetite effect for me is flat across seven days. On sema it was a wave. Same person, different molecule.

Research-use-only material is not approved for human use and nothing here should be read as a recommendation to use it.

1,716 up / 214 down89% upvoted49 commentsid 1rt1sj6 May 2026

49 comments

24 in this archive, depth 5

best — the order this archive was captured in

u/ghrp_history218 points·2 months ago

It is a dual GIP and GLP-1 receptor agonist, and the GIP arm is the part that has no equivalent in the semaglutide threads. That is why the side-effect profile reads differently rather than just milder.

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u/kofi_balogun181 points·2 months ago

Weekly dosing again, half-life in the same neighbourhood as sema, so a step change takes about a month to reach steady state. Judging a new step at day five is judging noise.

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[removed]72 points·2 months ago

[removed by moderator]

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u/two_mil_or_one25 points·2 months ago

Agreed, and the trial number is a mean of a very wide distribution — the tails are enormous and nobody posts from the middle.

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u/hugo_bergstrom91 points·2 months ago

hold the dose that works, the ladder is not a leaderboard

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u/laila_yilmaz-26 points·2 months ago

stepping every four weeks is a ceiling on speed, not a schedule you must hit

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u/nordic_pricing1 point·2 months ago

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.

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u/certified_referenceQC1 point·2 months ago

SURMOUNT-1 ran 72 weeks with the top arm around 21% mean body weight change.

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

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u/matias_salgado1 point·2 months ago

The 21% figure is a 72-week mean on the highest arm. Quoting it as what someone should expect by week 7 is not a fair reading.

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u/dexa_twice_yearlyMOD90 points·2 months ago

This is the fifth "should I go up" post today and they are all welcome — but no member here can answer it for you.

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u/ahmed_fonseca74 points·2 months ago

sulphur burps are the signature complaint and they are not dangerous

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u/yusuf_ramos88 points·2 months ago

Right. And the sema-to-tirz "conversion" people post is invented. There is no published equivalence.

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u/certified_referenceQC35 points·2 months ago

Same experience with the appetite effect being flatter across the week rather than front-loaded.

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u/hana_pereira24 points·2 months ago

Correction to my own post above — I said 15mg and I have been on 7.5mg since the spring. Same argument, wrong number.

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u/coring_the_stopper44 points·2 months ago

Push back: "gentler than sema" is a population statement. Plenty of people on this board have the opposite experience and they are not doing it wrong.

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u/mikkel_kimani52 points·2 months ago

the four-week step schedule is the label, not folklore

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u/forest_plot_fionastats20 points·2 months ago·edited

Push back: "gentler than sema" is a population statement.

Not sure about this bit. The GIP arm being real does not tell you that it is what caused your particular week.

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u/priya_guerrero12 points·2 months ago

Have you held a step for longer than the four-week minimum at any point?

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u/throwaway_titration17 points·2 months ago

zepbound and mounjaro are the same compound with different labels

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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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