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

nobody warned me about muscle cramps and I would have liked the warning

Question Sourced ×8 Long Haul ×1

nobody warned me about muscle cramps and I would have liked the warning. Change my mind, genuinely — I have no stake in being right about this.

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.

Week 64 was the first time the scale moved after a five-week stall. I changed nothing in that window.

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.

If somebody has the same thing measured a different way, post it next to mine and we will see whether they agree.

1,481 up / 350 down81% upvoted65 commentsid 1r92l616 May 2026

65 comments

28 in this archive, depth 4

best — the order this archive was captured in

u/alcohol_aversion175 points·2 months ago·edited

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/aurel_lindqvist257 points·2 months ago

The four-week interval in the label is a minimum.

Saving this one. It is the clearest statement of the stall problem I have read here.

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[removed]169 points·2 months ago

[removed by moderator]

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u/swirl_dont_shakereconstitution106 points·2 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/kaia_cabreraOP108 points·2 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/mikkel_kimani76 points·2 months ago

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

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u/taper_off_tabitha131 points·2 months ago

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

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u/teodor_szabo149 points·2 months ago

Sulphur burps for the first eight days after each step, then nothing.

This. The step interval is a floor, and reading it as a timetable is the most expensive mistake in the thread.

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u/ignacio_vanhecke177 points·2 months ago

Sulphur burps for the first eight days after each step, then nothing.

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

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u/tidy_vialdrawer_pls48 points·2 months ago

Correction to my own post above — I said 12.5mg and I have been on 10mg since the spring. Same argument, wrong number.

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u/aurel_lindqvist91 points·2 months 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/sanne_novak44 points·2 months ago

week 3 is early to draw any conclusion at all

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u/vito_chowdhury12 points·2 months ago

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

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u/sofia_nascimento17 points·2 months ago

Pen or vial? The step sizes available differ and it changes this answer.

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u/cormac_pereira46 points·2 months ago

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

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u/neha_falk29 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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u/samir_falk21 points·2 months ago

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

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u/tove_vasquez13 points·2 months ago

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

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/hugo_bergstrom39 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/bastian_eriksen20 points·2 months ago

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

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u/kaia_cabreraOP12 points·2 months ago·edited

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

bastian_eriksen 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/thyroid_tangent3 points·2 months ago

zepbound and mounjaro are the same compound with different labels

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u/teodor_szabo1 point·2 months ago

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

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u/quiet_moderatormod18 points·2 months ago

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

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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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