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c/retatrutide·posted 2 years ago by u/customs_seizure_sid

what would you tell week-1 you about dose escalation

Question Well Actually ×6 Slow Clap ×2 Receipts ×1

The title is the whole question — what would you tell week-1 you about dose escalation — but here is why I am asking.

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.

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.

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.

Happy to answer the boring questions. Those are usually the ones worth asking.

5,176 up / 609 down89% upvoted70 commentsid fyrx5z30 Mar 2024

70 comments

30 in this archive, depth 4

best — the order this archive was captured in

u/solene_ilunga281 points·2 years ago·edited

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/careful_gradient32239 points·2 years ago

Kept a log specifically because there is so little published. It is one person and it is not data.

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u/janek_ferrari82 points·2 years 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/nadia_trevino66 points·2 years ago

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

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u/honest_syringe_202555 points·2 years ago

wait for phase 3 before you argue about rankings

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u/viktor_laurent0 points·2 years ago

Which phase 2 arm are you quoting, and at what week?

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u/freya_baptista160 points·2 years ago

Nothing containing this compound is approved anywhere. Research-use-only material is not approved for human use, and that is a statement of fact rather than a disclaimer.

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u/ewan_marchand51 points·2 years ago

research-use-only material is not approved for human use, full stop

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u/customs_seizure_sidOP-12 points·2 years ago

research-use-only material is not approved for human use, full stop

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

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u/rosa_almeida1 point·2 years 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/baseline_drifteranalytical113 points·2 years ago

Independent purity testing on this compound is thin compared with the older molecules, simply because fewer members have paid for it. Fewer results means wider uncertainty, not a verdict.

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u/hugo_pires70 points·2 years ago

Increases in heart rate have been reported across this receptor class. The magnitude and clinical significance are exactly what phase 3 is powered to establish.

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u/injection_site_iris58 points·2 years 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/customs_seizure_sidOP38 points·2 years ago

heart rate is the thing people report watching

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u/burned_once_twice35 points·2 years ago

Sent a vial to Medutest out of curiosity. Result was 99.5% against a claimed 99.0%, which is the first independent number I had seen for this compound anywhere.

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u/ferran_krastev42 points·2 years 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/aa_analysis_andy10 points·2 years ago

dose escalation in the trials was slow for a reason

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u/reta_and_regret3 points·2 years ago

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

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[deleted]17 points·2 years ago

[deleted]

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u/mod_cold_roommod · c/coldchain9 points·2 years 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/nikhil_asante17 points·2 years ago

Careful with the rankings. A phase 2 result and a phase 3 result are not on the same evidential footing and cannot be listed in one table.

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u/rui_only_ro5 points·2 years ago

the glucagon component is why the metabolic story reads differently

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u/lurker_for_years16 points·2 years 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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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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