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

[Results] 66 weeks on 15mg, full numbers, ask me anything boring

Results Cold Box ×7 Well Actually ×2 Receipts ×2

Six-word version is the title — 66 weeks on 15mg, full numbers, ask me anything boring — and the rest is context.

66 weeks and 15mg. Those are measured, not estimated, and not rounded up in my favour.

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.

Please do not ask me what dose you should be on. I genuinely do not know and neither does anyone else here.

6,310 up / 1,419 down82% upvoted47 commentsid t4xfy212 Mar 2025

47 comments

30 in this archive, depth 5

best — the order this archive was captured in

u/throwaway_titration838 points·1 year ago

Week 32 was the first time the scale moved after a five-week stall. I changed nothing in that window.

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u/priya_guerrero435 points·1 year 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/tove_vasquez635 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/kofi_balogun-5 points·1 year ago

Which week did the appetite change actually land for you?

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u/incretin_ivyOPpharmacology1 point·1 year ago

2.5 is the starter dose and it is not meant to be the dose that works

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u/vito_chowdhury202 points·1 year 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/incretin_ivyOPpharmacology75 points·1 year 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/nordic_pricing32 points·1 year ago

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

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u/graph_it_gary200 points·1 year ago·edited

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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u/dario_stanescu50 points·1 year ago

the muscle cramps profile is genuinely gentler than people expect coming from sema

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u/discount_math_dm16 points·1 year ago

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

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u/emil_barros138 points·1 year ago

if 7.5 is working, 10 is not automatically better

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u/quiet_moderatorMOD80 points·1 year ago

Left up, flair changed to Discussion. It is an opinion post and that is fine as long as it is labelled.

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u/throwaway_wl202639 points·1 year ago

week 6 is early to draw any conclusion at all

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u/incretin_ivyOPpharmacology23 points·1 year ago

Did you come to this from sema, and if so how long was the gap?

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u/gustav_vermeulen19 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/dexa_twice_yearlybody comp76 points·1 year ago

if 7.5 is working, 10 is not automatically better

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

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[deleted]27 points·1 year ago

[deleted]

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u/priya_guerrero56 points·1 year 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/sten_palacios25 points·1 year ago·edited

Came off sema and onto tirz with a two-week gap.

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

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u/tarek_kirchner23 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/noor_hovland11 points·1 year ago

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

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u/bastian_ekstrom14 points·1 year ago

Right.

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/ahmed_iyer77 points·1 year ago

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/nabila_ogunleye43 points·1 year 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/copay_card_cc11 points·1 year ago

zepbound and mounjaro are the same compound with different labels

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u/sofia_nascimento40 points·1 year ago

Not sure that follows. You went up a step and changed your training in the same fortnight.

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u/emil_wojcik51 points·1 year 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/throwaway_wl202636 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/vito_chowdhury27 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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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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