Compounds · Tirzepatide

Why tirzepatide titration schedules have more steps than semaglutide's

Compounds › Tirzepatide SURMOUNT programme SURPASS programme randomised trial tirzepatide

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Solved by Rodrigues in post #2

The opening post put the caveat in the right place and I want to underline it. SURPASS-2's comparator choice is the criticism that survives. Semaglutide 1.0 mg was the licensed diabetes dose at the time and it was not the highest dose available in the class, so the trial answers a narrower question than the headline…

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i.guerreroTL229 Nov 2025#1

Asking directly, because I could not find a straight answer: Why tirzepatide titration schedules have more steps than semaglutide's

I have spent a fortnight trying to pin tirzepatide titration schedules down and I want to set out where I have got to, because I suspect the honest answer is duller than the thread this will produce.

What I have: a consistent observation across a small number of cases, collected the same way each time. What I do not have: any controlled comparison, or any reason to think my cases are representative.

The specific question is whether the pattern survives once the obvious confounder is removed. I cannot remove it with what I have.

0 likes 8mo

RodriguesTL3Regular Solution4 Dec 2025#2

The opening post put the caveat in the right place and I want to underline it.

SURPASS-2's comparator choice is the criticism that survives. Semaglutide 1.0 mg was the licensed diabetes dose at the time and it was not the highest dose available in the class, so the trial answers a narrower question than the headline implies.

That matches what I was told, which is not the same as knowing it.

7 likes 8mo

h.brandtTL28 Dec 2025#3

Rodrigues, post #2: The opening post put the caveat in the right place and I want to underline it. SURPASS-2's comparator choice is the criticism that survives. Semaglutide 1.0 mg was the licensed diabetes dose at the time and it was not the highest dose available in the class, so the trial answers a narrower question than the headline implies. That… Go to post

The GIP component: GIP receptor agonism is thought to amplify the GLP-1 effect on satiety and energy expenditure, but how much of tirzepatide's effect is that and how much is simply achieving higher receptor occupancy remains genuinely open. The mechanistic literature is active.

4 likes in reply to #2 8mo

isotonic_sheetTL3Regular12 Dec 2025#4

Community wiki post. Any member at trust level 3 or above can edit this post; every edit is recorded. Last edited by revision_history on 14 May 2026.

24 Dec 2025 — s.chowdhury: Added the worked example and a unit label to the table header.
14 Feb 2026 — chromatogram: Clarified the distinction that was causing repeat questions below.
14 May 2026 — revision_history: Removed a claim that the cited source did not support.

Editors: s.chowdhury, chromatogram, revision_history

Noted, and thank you for writing it out rather than summarising it.

13 likes 8mo

j.sorensenTL216 Dec 2025 · edited#5

Post #2 is the version of this I will quote in future. One addition.

SURPASS-2 compared tirzepatide with semaglutide 1.0 mg, the licensed diabetes dose at that time. It did not compare with semaglutide 2.4 mg, the highest approved dose. That is the central and legitimate criticism of the head-to-head evidence and it is worth remembering when people quote the trial.

The variance between people here is larger than the effect being discussed.

27 likes 7mo

This topic was referenced in

About the Tirzepatide categoryCompounds › Tirzepatide · 6 replies
[2026 update] Does dual agonism explain the effect size, or is it dose?Compounds › Tirzepatide · 63 replies

Promoted into the documentation commons. The content of this topic is maintained at Tirzepatide — reference, with named maintainers and a review date. The promotion was discussed in doc review. Corrections are best raised against the document, which is the version that gets kept current.

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