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

[Lab] split one vial across Medutest and Janoshik — 99.3% and 98.7%

Lab Cold Box ×2 Long Haul ×3

Filing this under things worth writing down: split one vial across Medutest and Janoshik — 99.3% and 98.7%.

To save the first four comments: 99.3% and 98.7%.

Research-use-only material is not approved for human use. Anything in this thread about how a research vial "should" titrate is a discussion about chemistry, not a plan.

Vials and pens carry the same molecule; what differs is fill volume, device tolerance and whether you are doing your own arithmetic. Neither is inherently more accurate.

Corrections welcome, especially the pedantic ones. Pedantry is how this board earns its reputation.

1,643 up / 503 down77% upvoted42 commentsid sucpnh23 May 2026

42 comments

28 in this archive, depth 4

best — the order this archive was captured in

u/ghrp_history77 points·2 months ago·edited

The distribution matters more than the mean. In the trial population the interquartile spread was wide enough that two honest people can have completely different runs on the same arm.

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u/endpoint_creep37 points·2 months ago

Agree. The GIP component is the interesting half and it barely gets discussed outside c/glp1science.

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u/laila_wikstrom11 points·2 months ago

the reflux profile is genuinely gentler than people expect coming from sema

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u/tarek_kirchner-23 points·2 months ago·edited

sulphur burps are the signature complaint and they are not dangerous

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u/georgi_chowdhury0 points·2 months ago

the reflux profile is genuinely gentler than people expect coming from sema

Not sure about this bit. The GIP arm being real does not tell you that it is what caused your particular week.

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u/samir_falk30 points·2 months ago

28kg over 88 weeks, never went past 10mg, and food noise stayed mild the whole way. Posting because the loud threads are all 15mg.

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u/hair_shed_hannah13 points·2 months ago

the four-week step schedule is the label, not folklore

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u/hana_pereira21 points·2 months ago

Agreed, and the trial number is a mean of a very wide distribution — the tails are enormous and nobody posts from the middle.

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u/fatima_wojcik15 points·2 months ago

Appetite effect for me is flat across seven days. On sema it was a wave. Same person, different molecule.

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u/customs_seizure_sid51 points·2 months ago

Came off sema and onto tirz with a two-week gap. The first month was flat and I assumed I had made a mistake. Month two it moved.

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u/crosspost_bot_no35 points·2 months ago·edited

Not sure that follows. You went up a step and changed your training in the same fortnight.

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u/sten_palaciosOP42 points·2 months ago

Did you come to this from sema, and if so how long was the gap?

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u/sten_palaciosOP26 points·2 months ago

Correction to my own post above — I said 10mg and I have been on 12.5mg since the spring. Same argument, wrong number.

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u/certified_referenceQC22 points·2 months ago

What step are you on and how long have you been there?

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u/aksel_kjaer19 points·2 months ago

The four-week interval in the label is a minimum. Nothing about the pharmacology requires you to step on schedule, and the trials stepped on a calendar because trials have to.

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u/incretin_ivyMOD14 points·2 months ago

Left up, flair changed to Discussion. It is an opinion post and that is fine as long as it is labelled.

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u/ahmed_iyer6 points·2 months ago

Cosigning the four-week thing. It is a minimum interval, and treating it as a schedule to keep up with is how people end up miserable at 12.5.

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u/dario_vermeulen0 points·2 months ago

It is a dual GIP and GLP-1 receptor agonist, and the GIP arm is the part that has no equivalent in the semaglutide threads. That is why the side-effect profile reads differently rather than just milder.

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u/copay_card_cc8 points·2 months ago

SURMOUNT-1 ran 72 weeks with the top arm around 21% mean body weight change. SURPASS is the diabetes programme and reports glycaemic endpoints, so quoting the two interchangeably is a category error.

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u/bastian_eriksen2 points·2 months ago

Right. And the sema-to-tirz "conversion" people post is invented. There is no published equivalence.

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u/sten_palaciosOP1 point·2 months ago

Small fix: SURMOUNT is the obesity programme, SURPASS is the type-2 programme. They are different endpoints and the numbers do not transfer.

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u/thyroid_tangent1 point·2 months ago

Small fix: SURMOUNT is the obesity programme, SURPASS is the type-2 programme.

Saving this one. It is the clearest statement of the stall problem I have read here.

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[removed]6 points·2 months ago

[removed by moderator]

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u/elin_ferrari5 points·2 months ago

SURMOUNT-1 landed around 21% at 72 weeks on the top arm

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u/sofia_nascimento3 points·2 months ago

The 21% figure is a 72-week mean on the highest arm. Quoting it as what someone should expect by week 47 is not a fair reading.

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u/aurel_lindqvist1 point·2 months ago

hold the dose that works, the ladder is not a leaderboard

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u/cormac_pereira1 point·2 months ago

Yes — 10mg being a genuine landing place for a lot of people is underrated. There is no medal for 15.

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u/graph_it_gary1 point·2 months ago

week 2 is early to draw any conclusion at all

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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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