Compare peptides

Compare peptides

This is a side-by-side of what is documented, not a ranking. Different compounds are studied for different things, in different people, at different amounts. A row that looks stronger for one compound does not make it the better choice for anyone.

BrenipatideRetatrutide
Highest evidence tier on the pageE2 Human clinical evidence
Registered or peer-reviewed human trial with reported results.
E2 Human clinical evidence
Registered or peer-reviewed human trial with reported results.
Regulatory statusNot statedIn clinical development, not approved
Research areaMetabolic and incretinMetabolic and incretin
Investigational pipelineAddiction & Mental HealthNot stated
Regulator-approved dose on fileNo approved doseNo approved dose
Molecular formulaNot reliably established in publicly available sources reviewed for this page.Not reliably established
Molar massNot reliably established in publicly available sources reviewed for this page.Not reliably established
CAS numberNot reliably established.2381089-83-2
Registered trials on this site4 in the tracker7 in the tracker
Furthest registered phasePhase 3Phase 3
Trials currently active30
Trial sponsorsEli Lilly and CompanyEli Lilly and Company
What is not knownWhether brenipatide reduces drinking or depressive symptoms in its phase 3 trials has not been established; topline data is expected around 2028. The specific per-arm doses used in the three phase 3 RENEW trials have not been independently confirmed from sources reviewed for this page...Its molecular weight. Figures circulate in chemical catalogues, but no primary publication or regulatory document names one, so none is asserted here. Whether it prevents anything. No cardiovascular or kidney outcome data exist. TRIUMPH-Outcomes, 10,000 participants across 743 sites, has a primary completion date of...
Published trials covered on its pageNot stated7
Amounts studied in those trialsNot statedNCT04867785: Retatrutide 0.5, 4, 8 or 12 mg once weekly, dulaglutide 1.5 mg once weekly, or placebo; the 4 mg and 8 mg maintenance doses were each given twice, differing only in starting dose for 36 weeks
NCT04881760: Retatrutide 1, 4, 8 or 12 mg once weekly, or placebo, across seven arms; the 4 mg and 8 mg arms each ran with a 2 mg or a 4 mg starting dose for 48 weeks
TRIUMPH-1, NCT05929066: Retatrutide 4, 9 or 12 mg once weekly after a 16 week fixed escalation, or placebo, 1:1:1:1 for 80 weeks, with an optional 24 week extension for about 500 participants
As reported on the compound page. Amounts are not comparable between compounds.

Full pages: Brenipatide and Retatrutide. See also the clinical trial tracker and how we grade evidence.

Educational reference, not medical advice. Trial data from ClinicalTrials.gov. Everything else is drawn from the compound pages on this site, each of which cites its sources.