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c/tirzepatide·posted 1 months ago by u/aksel_kjaer

[Meta] the 15mg rule is doing its job and people should stop complaining

Results Long Haul ×2 Receipts ×1 Slow Clap ×3

Posting this because I searched for it and got nothing useful.

Setup: 12.5mg, week 16, constipation present but not ruining anything. I changed exactly one variable — SURPASS — and tracked it for 11 weeks.

Result: a difference, but a small one, and well inside what I would call noise if someone else posted it. So I am putting it here rather than presenting it as a finding. If two or three other people have done the same thing we might actually learn something.

Not medical advice, obviously. This is one person with a spreadsheet.

4,026 up / 125 down97% upvoted61 commentsid p8hvmu13 Jun 2026

61 comments

30 in this archive, depth 6

best — the order this archive was captured in

u/quiet_moderatorMOD293 points·1 months ago

Flair changed to match the content. Read the sidebar before posting next time and we are square.

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u/sanne_novak180 points·1 months ago

You have restated the marketing copy. What is the actual substance here.

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u/aksel_kjaer49 points·1 months ago

You have restated the marketing copy.

Yes, exactly this, and it is the bit that took me 23 weeks to accept.

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u/rania_diallo128 points·1 months ago

Disagree but this is the good kind of wrong — it is specific enough to be checked.

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u/thyroid_tangent28 points·1 months ago

Rodent data is rodent data. Dose scaling is not linear and the models tell you what to investigate, not what to expect.

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u/incretin_ivypharmacology132 points·1 months ago

Yeah, dual agonism does produce a different appetite profile than GLP-1 alone.

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u/yusuf_ramos63 points·1 months ago·edited

The dual agonism story is real. The appetite is physically different from semaglutide alone.

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u/laila_yilmaz21 points·1 months ago

SURMOUNT data is messier than STEP data but the weight loss is there

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u/curious_panel_only50 points·1 months ago

Did you stay on semaglutide or switch? The outcome is different if you are comparing.

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u/aksel_kjaerOP29 points·1 months ago

the dual agonism hits different and that is why people describe it differently

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u/b12_baseline11 points·1 months ago·edited

the appetite change on tirz is more than just reduced hunger, it is different machinery

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[removed]4 points·1 months ago

[removed by moderator]

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u/nz_unfunded1 point·1 months ago

SURMOUNT data is messier than STEP data but the weight loss is there

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u/ahmed_fonseca74 points·1 months ago

Yeah, dual agonism does produce a different appetite profile than GLP-1 alone.

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u/aksel_kjaerOP29 points·1 months ago

The SURMOUNT readouts are real but less consistent than STEP. Some people plateau earlier on tirz.

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u/hana_pereira49 points·1 months ago

Did you stay on semaglutide or switch? The outcome is different if you are comparing.

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u/sofia_nascimento30 points·1 months ago

Strongly agree. Tirz is better than sema is not a claim without a comparator dose.

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u/endpoint_creep38 points·1 months ago

Strongly agree. Tirz is better than sema is not a claim without a comparator dose.

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u/aksel_kjaerOP15 points·1 months ago

dual agonism is Mounjaro, do not generalise from semaglutide

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u/sanne_novak11 points·1 months ago

the appetite change on tirz is more than just reduced hunger, it is different machinery

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u/search_before_post-19 points·1 months ago

Strongly agree.

Disagree on that part. 99.0% and 98.9% on the same vial is normal.

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u/ewan_marchand0 points·1 months ago

do not crack the pen, we have been over this

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u/fatima_wojcik1 point·1 months ago

Strongly agree. Tirz is better than sema is not a claim without a comparator dose.

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u/samir_falk21 points·1 months ago

Strongly agree. Tirz is better than sema is not a claim without a comparator dose.

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u/mikkel_ogunleye14 points·1 months ago

Small correction: the trial was 5 weeks, not 35. Does not change your point but people will quote it.

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u/two_mil_or_one12 points·1 months ago

the 15mg is the top of the pen, not the required dose

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u/neha_falk19 points·1 months ago

SURMOUNT data is messier than STEP data but the weight loss is there

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u/swirl_dont_shakereconstitution10 points·1 months ago

Hard agree. The food noise disappears differently on the two compounds.

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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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