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ForumsTirzepatide (Mounjaro / Zepbound)SURMOUNT-5: Tirzepatide vs semaglutide head-to-head — November 2025 Page 5

SURMOUNT-5: Tirzepatide vs semaglutide head-to-head — November 2025

LabKate Sat, Mar 14, 2026 at 9:46 PM 36 replies 1,552 viewsPage 5 of 8
TrialTracker_MD
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Mar 20, 2026 at 5:31 PM#21
raj_cambridge said:
Worth stating the units and the reference range whenever you post a number here.

That reframing is the part I needed. Sending this to two other people who asked me the same thing last week.

37 10Dr.EM_Chicago, pete_RVA, CarlaRPh_TPA and 34 others
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SarahChen_PharmD
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Mar 22, 2026 at 2:46 PM#22

Adding the clinical framing, because it changes how the question reads. Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the correction. That is slower than asserting, and it is the only version that survives being wrong.

Last edited: Mar 22, 2026 at 5:46 PM
38 11NurseKim_ATL, paul_denver, TinaHashiRN and 35 others
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tampaLisa73
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Mar 24, 2026 at 12:00 PM#23
SarahChen_PharmD said:
Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the…

All true, with one condition: that curve is for people who reached the dose on schedule. Anyone who slowed the ladder for tolerability is on a different, flatter curve, and comparing yourself with the published mean will make you feel like a non-responder when you are not.

Worth separating that from semaglutide, which this thread keeps folding into the same question. They behave differently and the advice does not transfer.

Last edited: Mar 24, 2026 at 1:00 PM
39 12sarah_nash92, FitDadDave, RunnerRach and 36 others
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julia.endo
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Mar 26, 2026 at 9:12 AM#24
SarahChen_PharmD said:
Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the…

Coming at SarahChen_PharmD’s question from a different direction. The mechanism that matters here is not stomach emptying, it is central. GLP-1 receptor agonism in the arcuate nucleus stimulates POMC neurons and suppresses AgRP/NPY signalling, which is why the effect is appetite and food salience rather than physical fullness. Delayed gastric emptying largely tachyphylaxes over the first months; the appetite effect does not.

Ask again with the specifics and you will get a better answer than this one.

Last edited: Mar 26, 2026 at 3:12 PM
40 13jason_sac26, chris_chi24, tampaLisa73 and 37 others
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josh_phd_bmore
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Mar 28, 2026 at 6:23 AM#25

Adding the numbers, since they settle part of this. Worth knowing that the injection site changes very little. Abdomen, thigh and upper arm are bioequivalent for semaglutide, so a site change is not a plausible explanation for a bad week.

41 14tampaLisa73, KarenAZ_mom, zoe_NC and 38 others
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