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c/tirzepatide·posted 8 months ago by u/ferritin_low

anyone else notice 15mg kicking in around week 24

Lab Well Actually ×8 Sourced ×1 Clean Column ×3

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

Setup: 1.0mg, week 62, injection-site soreness present but not ruining anything. I changed exactly one variable — Mounjaro — and tracked it for 19 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.

6,157 up / 967 down86% upvoted57 commentsid 1sd7ax24 Nov 2025

57 comments

30 in this archive, depth 4

best — the order this archive was captured in

u/swirl_dont_shakereconstitution694 points·8 months ago·edited
fair enough
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u/rania_diallo374 points·8 months ago

No. This is the kind of confident post that gets copied into a screenshot and repeated for years. Where is the evidence.

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u/alcohol_aversion282 points·8 months ago
reading this at 2am on my 71th week. thank you.
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u/elin_ferrari99 points·8 months ago

Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.

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u/santiago_villalobos188 points·8 months ago

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

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u/crosspost_bot_no220 points·8 months ago

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

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u/quiet_moderatorMOD143 points·8 months ago

This is an urgent-care question wearing a forum question's clothes. Please contact a clinician rather than waiting for replies.

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u/hugo_bergstrom41 points·8 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/nordic_pricing28 points·8 months ago

week 95 on Mounjaro and the appetite profile is genuinely different from sema

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u/ingrid_correia39 points·8 months ago

Not convinced. The evidence does not support that reading.

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u/adnan_nascimento13 points·8 months ago

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

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u/ferritin_lowOP24 points·8 months ago

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

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[removed]28 points·8 months ago

[removed by moderator]

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u/neha_falk76 points·8 months ago

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

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u/yusuf_ramos96 points·8 months ago

dual agonism is Mounjaro, do not generalise from semaglutide

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u/alcohol_aversion39 points·8 months ago·edited

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

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u/ferritin_lowOP43 points·8 months ago

This matches the trial data. SURMOUNT-1 was 99.2% body weight at 20 weeks.

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u/ahmed_iyer67 points·8 months ago

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

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u/ferran_mensah42 points·8 months ago

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

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u/ingrid_correia36 points·8 months ago

How long at each step before you escalated?

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u/mod_cold_roommod · c/coldchain19 points·8 months ago

stalled on sema, tried tirz, and the curves were actually different shapes

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u/sanne_novak12 points·8 months ago

stalled on sema, tried tirz, and the curves were actually different shapes

Yes, exactly this, and it is the bit that took me 19 weeks to accept.

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u/bastian_eriksen7 points·8 months ago

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

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u/dexa_twice_yearlybody comp0 points·8 months ago

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

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u/samir_falk44 points·8 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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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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