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c/retatrutide·posted 3 months ago by u/ledger_mod

triple agonist: what the trials say vs what this community says

Question Well Actually ×2 Slow Clap ×3 Cold Box ×2

triple agonist: what the trials say vs what this community says. Making the case below, and I expect to lose some of it in the comments.

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.

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.

It is a triple agonist at the GLP-1, GIP and glucagon receptors. The glucagon arm is the genuinely novel component and it is the one with the least human outcome data behind it.

Ask me anything specific. Anything general I will probably get wrong.

3,011 up / 65 down98% upvoted42 commentsid vme8un24 Apr 2026

42 comments

30 in this archive, depth 6

best — the order this archive was captured in

u/two_mil_or_one495 points·3 months ago

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.

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u/ledger_modOPmod · vetting347 points·3 months ago

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

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u/placebo_arm_pam167 points·3 months ago

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

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u/trialwatch_theotrial nerd125 points·3 months ago

Phase 2 estimates effect and finds a dose range. Phase 3 estimates it precisely in a bigger population and catches what phase 2 was too small to see. Treating them as the same tier of evidence is the recurring error here.

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u/ledger_modOPmod · vetting74 points·3 months ago

Phase 2 estimates effect and finds a dose range.

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

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[removed]90 points·3 months ago

[removed by moderator]

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u/ledger_modOPmod · vetting71 points·3 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/noor_ivaturi-20 points·3 months ago

Watched heart rate on a wearable across twelve weeks because the threads said to. It moved a little and I have no idea whether that means anything.

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u/emil_wojcik1 point·3 months ago

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

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u/cormac_roos153 points·3 months ago

the energy-expenditure story is mechanistically interesting and clinically unproven

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u/lane_watchermod · logistics67 points·3 months ago

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

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u/lurker_for_years456 points·3 months ago

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.

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u/ewan_zielinski107 points·3 months ago

not approved anywhere, which is the single most important fact in this board

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u/reflux_report65 points·3 months ago

Are you tracking heart rate at all?

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u/cormac_roos47 points·3 months ago

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

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u/halima_mbeki301 points·3 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/nausea_notesside effects186 points·3 months ago

Disagree. "More receptors means more effect" is not how any of this works and the trial data does not support the linear story.

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u/incretin_ivyMOD137 points·3 months ago

Standing reminder in every thread here: unapproved compound, research material is not for human use, nothing on this board is medical advice.

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u/fabio_lehtinen60 points·3 months ago

a lot of the confident posting here is extrapolation

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u/nikhil_lindqvist124 points·3 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/cagrilintide_enthusiast104 points·3 months 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/signe_villalobos30 points·3 months ago

phase 2 data only, and people quote it like it is a label

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u/nadia_norgaard17 points·3 months ago·edited

phase 2 data only, and people quote it like it is a label

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/heart_rate_bump19 points·3 months ago

phase 2 data only, and people quote it like it is a label

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

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u/trialwatch_theotrial nerd9 points·3 months ago

This is the sentence the rest of the board should read first.

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

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u/nabila_bakken4 points·3 months ago

triple agonist — GLP-1, GIP and glucagon, and the glucagon arm is the new part

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u/incretin_ivypharmacology21 points·3 months ago

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

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u/lina_bruun7 points·3 months ago

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

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u/clara_weiss70 points·3 months ago·edited

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

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u/dead_space_doug44 points·3 months ago

How fast was the escalation? That is usually the variable that explains the reports.

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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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