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

[Meta] proposal — a flair for phase 2 posts

Caution Well Actually ×2 Cold Box ×3

proposal — a flair for phase 2 posts. Disagreement welcome, but bring a concrete alternative wording.

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.

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.

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.

I will update this if the picture changes rather than quietly leaving it up.

2,729 up / 162 down94% upvoted16 commentsid uixt6e4 Apr 2026

16 comments

9 in this archive, depth 3

best — the order this archive was captured in

u/discount_math_dm255 points·3 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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u/source_or_silence86 points·3 months ago

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

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u/nadia_trevino44 points·3 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/ismael_eriksen129 points·3 months ago

small trial, big effect, wide error bars

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u/lina_bruunOP188 points·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/lina_bruunOP-6 points·3 months ago

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

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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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  1. Retatrutide is not approved anywhere for human use. Posts must not read as usage instructions.
  2. Phase 2 numbers are not maintenance numbers. Cite the trial and the dose arm.
  3. Heart-rate and dose-escalation reports need actual measurements, not impressions.
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