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c/tirzepatide·posted 1 year ago by u/halima_boateng

reading 15mg threads from 2024 and half of it aged badly

Discussion Clean Column ×2 Slow Clap ×1 Cold Box ×1

reading 15mg threads from 2024 and half of it aged badly. It is the sort of thing everyone half-believes and nobody writes down.

Hard numbers: 15mg. Anything softer than that is flagged as an impression.

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.

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

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

3,595 up / 439 down89% upvoted63 commentsid s0z16624 Apr 2025

63 comments

30 in this archive, depth 5

best — the order this archive was captured in

u/amara_halonen-28 points·1 year 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/elin_ferrari1 point·1 year 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.

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/certified_referenceQC1 point·1 year ago

SURMOUNT-1 landed around 21% at 72 weeks on the top arm

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u/santiago_villalobos157 points·1 year ago

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

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u/dexa_twice_yearlyMOD89 points·1 year ago

Trial identifiers corrected in the title. SURMOUNT and SURPASS are different programmes.

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u/elin_ferrari83 points·1 year ago

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

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u/swirl_dont_shakereconstitution133 points·1 year 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/gustav_vermeulen41 points·1 year ago

Yes. I stepped to 12.5 because the calendar said so, not because anything needed fixing, and I regretted it for a fortnight.

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u/hana_pereira20 points·1 year ago

Yes.

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

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u/endpoint_creep15 points·1 year ago

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

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u/halima_boatengOP7 points·1 year ago

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

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u/ahmed_iyer5 points·1 year ago

Careful with "everyone tolerates it better". The people it did not suit stop posting, which makes this board look calmer than the drug is.

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u/emil_wojcik4 points·1 year 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/rania_diallo85 points·1 year ago

Yes — 10mg being a genuine landing place for a lot of people is underrated. There is no medal for 15.

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u/matias_salgado101 points·1 year ago·edited

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.

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u/tarek_lokken30 points·1 year ago

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

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u/fatima_wojcik36 points·1 year 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/forest_plot_fionastats18 points·1 year ago

This matches mine. Milder muscle cramps than I expected, and what there was settled inside a fortnight of each step.

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u/mikkel_kimani19 points·1 year ago

Agree. The GIP component is the interesting half and it barely gets discussed outside c/glp1science.

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u/samir_falk59 points·1 year ago

Disagree with the conversion table. There is no validated equivalence between the two molecules and posting one as though there is does real damage.

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u/ferritin_low86 points·1 year ago

the fatigue profile is genuinely gentler than people expect coming from sema

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u/neha_falk34 points·1 year ago

13kg over 28 weeks, never went past 10mg, and early fullness stayed mild the whole way. Posting because the loud threads are all 15mg.

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u/halima_boatengOP20 points·1 year ago

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

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u/slow_logbook_ftw6 points·1 year ago

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

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u/titration_marshalmod · c/semaglutide30 points·1 year ago

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

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u/elin_ferrari8 points·1 year 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/incretin_ivypharmacology6 points·1 year ago

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

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u/aurel_lindqvist5 points·1 year 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/britt_okwuosa1 point·1 year ago

Week 75 was the first time the scale moved after a five-week stall. I changed nothing in that window.

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u/matias_salgado5 points·1 year ago

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

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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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