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c/retatrutide·posted 4 days ago by u/liver_enzyme_liz

[Lab] two reta batches, two services, 98.4% and 97.9%

Lab Well Actually ×2 Cold Box ×3

two reta batches, two services, 98.4% and 97.9%, and before anyone asks: same batch throughout, single submission, no cherry-picking between services.

98.4% and 97.9%. Those are measured, not estimated, and not rounded up in my favour.

Stopped at a low step because there was no reason to go further and no data to tell me what further would do.

Where the evidence actually stands, since every thread here assumes a different answer.

Phase 2 reported a large mean body weight change at 48 weeks across a few hundred participants with a slow, protocol-driven escalation. The effect size was striking. The confidence intervals were wide, the population was small, and the duration was under a year.

Phase 3 is running. Until it reports, everything else — including the ranking arguments this board loves — is extrapolation from a small study. That is not a criticism of the compound; it is a description of the evidence.

Please do not ask me what dose you should be on. I genuinely do not know and neither does anyone else here.

2,155 up / 289 down88% upvoted31 commentsid 1l6wzi25 Jul 2026

31 comments

26 in this archive, depth 5

best — the order this archive was captured in

u/zeynep_mbeki213 points·4 days ago

The phase 2 readout ran to 48 weeks in a few hundred participants with a slow escalation. Both the size and the duration matter when people quote the headline number.

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u/lina_bruun108 points·3 days ago

Is that the 48-week figure or an earlier readout?

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u/liver_enzyme_lizOP39 points·2 days ago

dose escalation in the trials was slow for a reason

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u/lane_watchermod · logistics10 points·2 days ago

What is the source for that figure — the published paper or a summary of it?

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u/fabio_lehtinen8 points·2 days ago·edited

That is body weight change, not fat mass. The trials report the first and people quote it as the second.

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u/liver_enzyme_lizOP-6 points·1 days ago

Has anyone posted an independent test on this compound recently?

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u/priya_weiss51 points·2 days ago

Same read. The energy-expenditure mechanism is the interesting bit and it is not established in humans at scale.

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u/liver_enzyme_lizOP29 points·2 days ago

Small fix — three receptors, not two. GLP-1, GIP and glucagon, and the third one is the reason this compound gets its own board.

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u/ewan_marchand40 points·2 days ago

the phase 2 numbers were striking and they were also 48 weeks in a small population

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u/priya_weiss109 points·4 days ago·edited

Push back: quoting the phase 2 headline as an expected outcome is not a fair reading of a small trial with wide intervals.

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u/careful_gradient3242 points·4 days ago

the glucagon component is why the metabolic story reads differently

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u/mateusz_mensah72 points·3 days ago

What do you think the glucagon component is adding, specifically?

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u/blunt_coldbox_202457 points·3 days ago

the TRIUMPH programme is still running, so anything definitive is premature

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u/reta_and_regret45 points·3 days ago

nothing here is available as a prescription product, so read every thread with that in mind

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u/ewan_marchand31 points·3 days ago

Not convinced. You are attributing a week of sulphur burps to the glucagon arm when the escalation rate alone would explain it.

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u/quiet_moderatormod20 points·2 days ago·edited

nothing here is available as a prescription product, so read every thread with that in mind

Adding the standing caveat: none of this is approved anywhere and research material is not for human use.

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u/bilal_osei55 points·3 days ago

The sulphur burps profile felt different rather than worse. Hard to describe and impossible to quantify, so take it as an impression.

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u/iman_castellanos38 points·3 days ago

Are you tracking heart rate at all?

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u/emil_wojcik35 points·4 days ago

the escalation is where most of the reported trouble sits

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u/employer_carveout18 points·3 days ago·edited

Are you comparing against phase 3 numbers for something else? They are not comparable.

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u/liver_enzyme_liz17 points·3 days ago

the escalation is where most of the reported trouble sits

Disagree with this specific inference. A 48-week readout does not tell you the shape of the curve after it.

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u/rekha_vestergaard9 points·3 days ago

Agreed, and the framing that helps is: this is a phase 2 compound with phase 3 running. Everything else is inference.

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u/marta_vanhecke2 points·3 days ago

heart rate is the thing people report watching

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About c/retatrutide

Retatrutide: GIP/GLP-1/glucagon triple agonism, the TRIUMPH programme, and the fact that most people discussing it are handling research-grade material with no human-use approval anywhere. Dose-response, heart-rate signal, and the unusually steep phase-2 weight curves get argued about here weekly.

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