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

Zepbound — my 8-week log, condensed into one table

Results Clean Column ×8 Cold Box ×1 Long Haul ×1

Zepbound — my 8-week log, condensed into one table. I have gone back and forth on this for months.

Sulphur burps for the first eight days after each step, then nothing. Predictable enough that I planned my week around it.

The distribution matters more than the mean. In the trial population the interquartile spread was wide enough that two honest people can have completely different runs on the same arm.

Held 7.5 for five months. Everyone kept asking when I was going to 10. The answer was never, because 7.5 was working.

That is everything I have. The rest is opinion and I have tried to keep it out.

3,854 up / 735 down84% upvoted28 commentsid 1p15rm6 Apr 2026

28 comments

25 in this archive, depth 5

best — the order this archive was captured in

u/emil_barros453 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/mikkel_ogunleye664 points·3 months ago

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.

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u/elin_vargaOP320 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/laila_wikstrom261 points·3 months ago

the appetite effect is blunter than sema, in a good way, most weeks

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u/elin_vargaOP-30 points·3 months ago

What is the waist doing? That is usually the number still moving during a scale stall.

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u/throwaway_wl20260 points·3 months ago

This matches mine. Milder injection-site soreness than I expected, and what there was settled inside a fortnight of each step.

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u/hana_pereira1 point·3 months ago

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/tidy_vialdrawer_pls1 point·3 months ago

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

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u/thyroid_tangent541 points·3 months ago

On comparing yourself with the trial number.

SURMOUNT-1 reported roughly 21% mean body weight change at 72 weeks on the highest arm. Three things get dropped every time that figure is quoted here. It is a mean, and the distribution around it is very wide. It is 72 weeks, which is a year and a half. And it is a trial population with trial support, which is not the same as a person with a spreadsheet.

Use it as a rough shape, not a benchmark. A 12% year is inside the ordinary range and people quit over it every week on this board.

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u/discount_math_dm202 points·3 months ago

The step schedule question, answered properly, because it comes up weekly.

The label sets a minimum interval of four weeks between increases. That is a floor on how fast you may go, and it exists because tolerability, not efficacy, is what limits most people. There is nothing in the pharmacology that says you must increase at four weeks, or at eight, or ever.

What decides it in practice is whether the effect you want is still there. If appetite is quiet and the trend is going the right way, the dose is doing its job. If both have genuinely gone flat for six weeks or more, that is a conversation worth having with someone who knows your history.

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u/copay_card_cc55 points·3 months ago

Switching from semaglutide, since three people asked in this thread alone.

There is no published dose equivalence between the two. The conversion tables that circulate are somebody’s arithmetic, not data. What people report here is that the first month after a switch is often flat, that the appetite effect feels differently shaped rather than simply stronger, and that starting at the bottom of the ladder again is the common approach.

None of that is a recommendation. It is what the threads say, and the threads are not a clinic.

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u/slow_logbook_ftw44 points·3 months ago

the early fullness profile is genuinely gentler than people expect coming from sema

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u/titration_marshalmod · c/semaglutide26 points·3 months ago

Switching from semaglutide, since three people asked in this thread alone.

copay_card_cc 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/line_petrov141 points·3 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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u/ingrid_correia34 points·3 months ago

Vials and pens carry the same molecule; what differs is fill volume, device tolerance and whether you are doing your own arithmetic. Neither is inherently more accurate.

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u/rania_marchand49 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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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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