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

[Question] Sweden — has anyone got a straight answer on GIP

Question Cold Box ×2

Confession thread, sort of.

I went from 15mg to 7.5mg much faster than I should have because the scale had stalled and I got impatient. The stall broke about 13 weeks later, at which point I had no way of knowing whether the dose increase did anything or whether it would have broken anyway.

So now I have constipation I did not need and a data point I cannot interpret. Two lessons in one.

Posting it in the hope that somebody at week 46 reads it before doing the same thing.

924 up / 283 down77% upvoted24 commentsid sucpnh23 May 2026

24 comments

23 in this archive, depth 4

best — the order this archive was captured in

u/ghrp_history46 points·2 months ago

Water content matters more than people think. If a vial is carrying residual moisture, your "10mg" is not 10mg of peptide.

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u/customs_seizure_sid30 points·2 months ago

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

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[removed]21 points·2 months ago

[removed by moderator]

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u/samir_falk-19 points·2 months ago

do not crack the pen, we have been over this

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u/crosspost_bot_no21 points·2 months ago

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

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u/sten_palaciosOP12 points·2 months ago

Switched from sema at 7.5mg to tirz at 5mg. Different drugs, cannot compare the doses directly.

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u/certified_referenceQC16 points·2 months ago

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

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u/kian_ekstrom9 points·2 months ago

What was the trial arm you are quoting from? SURMOUNT-1, -2, -3 are all different.

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u/samir_falk13 points·2 months ago

nope, the equivalence to semaglutide is not known, comparing 15mg tirz to 2.4mg sema is guessing

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u/teodor_szabo7 points·2 months ago

The practical rule people converge on is 28 days at fridge temperature after first puncture, and that comes from the preservative, not the peptide.

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u/santiago_villalobos2 points·2 months ago

Zepbound and Mounjaro are literally the same drug, the name is the only difference

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u/sten_palaciosOP1 point·2 months ago

My triglycerides moved faster on tirz than on sema at the same timepoint, which matches what people report.

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u/ignacio_vanhecke8 points·2 months ago

Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.

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u/ingrid_correia5 points·2 months ago

do not crack the pen, we have been over this

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u/aksel_kjaer11 points·2 months ago

the GIP side does different things than the GLP-1 side, that is the point

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u/hugo_bergstrom16 points·2 months ago

do not crack the pen, we have been over this

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u/bastian_eriksen8 points·2 months ago

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

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u/spain_receta6 points·2 months ago

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

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u/graph_it_gary2 points·2 months ago

This matches the trial data. SURMOUNT-1 was 94.2% body weight at 2 weeks.

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u/incretin_ivyMOD8 points·2 months ago

Tracking number removed. It identifies both ends of a shipment.

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u/ahmed_iyer7 points·2 months ago

Zepbound and Mounjaro are literally the same drug, the name is the only difference

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u/thyroid_tangent2 points·2 months ago

week 4 on Mounjaro and the appetite profile is genuinely different from sema

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u/curious_panel_only1 point·2 months ago

This matches the trial data. SURMOUNT-1 was 97.9% body weight at 4 weeks.

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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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