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c/retatrutide·posted 4 months ago by u/solene_ilunga

help me understand retatrutide, I have read the wiki twice

Caution Receipts ×6

help me understand retatrutide, I have read the wiki twice. I am not trying to be the "source?" guy. I would just like a source.

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.

What the glucagon arm is doing, as best anyone can say from public data.

GLP-1 and GIP agonism cover appetite and insulin secretion in ways that are now reasonably well characterised. Glucagon receptor agonism is the third leg and it is associated with increased energy expenditure and with effects on hepatic fat.

Mechanistically that is why this compound reads as a different proposition rather than a stronger version of a dual agonist. Clinically, the size and durability of that difference in humans is precisely what is not yet established, and anyone telling you otherwise is filling a gap with confidence.

The standing caveat, written out properly because it keeps getting compressed into a footnote.

Nothing containing this compound is approved by any regulator. Research-use-only material is not approved for human use. That is not a legal formality on this board — it is why there is so little independent data, why the escalation schedules people post are invented, and why nobody here can answer a dosing question.

What this board can usefully do is read the published trials carefully, log independent purity results, and be honest about how thin the evidence base is. Everything else belongs somewhere with a clinician in it.

If two or three other people have done the same thing we might actually learn something. Alone it is an anecdote.

560 up / 217 down72% upvoted20 commentsid vmw7ya12 Mar 2026

20 comments

18 in this archive, depth 5

best — the order this archive was captured in

u/clara_weiss45 points·4 months ago

Glucagon receptor agonism is associated with increased energy expenditure and with hepatic effects. That is a mechanistic story with strong preclinical support and limited phase 2 human data.

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[removed]17 points·4 months ago

[removed by moderator]

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u/incretin_ivyMOD33 points·4 months ago·edited

Left up. It reads the phase 2 paper carefully and it is honest about the intervals.

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u/soren_nkemelu33 points·4 months ago

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

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u/deleted_my_history23 points·4 months ago

The nausea profile felt different rather than worse.

This is the sentence the rest of the board should read first. Phase 2 is not a label.

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u/yara_lindholm8 points·4 months ago

Agreed on the heart-rate reports. They are consistent enough across the threads to be worth noting, not enough to be a finding.

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u/matias_falk15 points·4 months ago

Right, and it bears repeating that nothing here is approved anywhere and research material is not for human use.

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u/andres_sorensen11 points·4 months ago

Cosigning the escalation point. Almost every difficult report on this board is from somebody who went up quickly.

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u/fabio_lehtinen3 points·4 months ago

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/niels_lindqvist1 point·4 months 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/solene_ilungaOP1 point·4 months 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/jarno_cabrera0 points·4 months ago

Correction: TRIUMPH is the phase 3 programme. The number you are quoting is from the phase 2 readout, which is a different trial.

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u/janek_ferrari1 point·4 months ago

The phase 2 readout ran to 48 weeks in a few hundred participants with a slow escalation.

Agreed, and the glucagon arm is exactly why the comparison threads do not work.

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u/mod_cold_roommod · c/coldchain3 points·4 months ago

Cosigning the escalation point.

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

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u/rekha_vestergaard2 points·4 months ago

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/trialwatch_theotrial nerd1 point·4 months ago

The thing that surprised me was how much of the discussion here is inference rather than measurement.

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u/naomi_erdogan1 point·4 months ago

the energy-expenditure story is mechanistically interesting and clinically unproven

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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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