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Human studiesResearch note2 min read

Retatrutide: reading the phase 2 evidence

Two phase 2 trials examined retatrutide in distinct populations: adults with obesity and people with type 2 diabetes.

ThePepBlog Research Edition · Educational summary · Prepared September 20, 2026

What the research examined

Two phase 2 trials examined retatrutide in distinct populations: adults with obesity and people with type 2 diabetes. Investigators measured weight-related or glycemic endpoints and reported gastrointestinal adverse events. The obesity trial also described heart-rate changes.

How to interpret the findings

Different populations, comparators, and endpoints prevent simple cross-trial rankings. These papers do not constitute a head-to-head comparison with every alternative or establish a current regulatory status. Trial observations apply to the investigated formulation.

Research literature

  1. Triple-Hormone-Receptor Agonist Retatrutide for Obesity - A Phase 2 Trial.
    The New England journal of medicine · 2023 · PMID 37366315
  2. Retatrutide, a GIP, GLP-1 and glucagon receptor agonist, for people with type 2 diabetes: a randomised, double-blind, placebo and active-controlled, parallel-group, phase 2 trial conducted in the USA.
    Lancet (London, England) · 2023 · PMID 37385280

Links open the indexed paper records. Summaries are based on those records and their available abstracts, not a systematic review or a full-text appraisal of every study.

This research note separates study findings from personal-use recommendations. It does not establish the safety, effectiveness, or equivalence of a commercial product.