Weight-loss drug trial comparison tool

15 trial results.
One honest chart.

Compare reported mean weight change and registered study design for Retatrutide, CagriSema, MariTide, Cagrilintide, Zenagamtide/Amycretin, Survodutide, VK2735, and other named programs. Every percentage stays attached to its weeks, phase, route, population, comparator, estimand, registry record, and outcome source.

Trial observations15Each source and method attached
Named programs13Including two VK2735 formulations
Duration range12-80Weeks, never converted to a weekly rate
Primary sources14Peer-reviewed and sponsor records
The direct answer

The biggest percentage is not automatically the best drug.

Retatrutide's 28.3% TRIUMPH-1 efficacy estimate is the highest value in this selected chart. CagriSema reported 22.7% under a different trial-product estimand, Enicepatide reported a 22.5% placebo-adjusted difference, and MariTide reported up to 19.9% across Phase 2 dose groups. Those are not matching measures from one contest.

A useful comparison starts by matching the clinical question. Check who entered the study, how long they were followed, whether the value is an active-arm mean or placebo-adjusted difference, what happened after discontinuation, and which estimand produced the number.

Cross-trial boundaryA source-linked orientation dataset of selected reported mean body-weight results from separate clinical trials. Differences in population, duration, dose, route, phase, estimand, adherence assumptions, rescue treatment, missing-data handling, comparator response, and source maturity prevent a cross-trial efficacy or safety ranking. A chart position is not a treatment recommendation, approval, individual prediction, or head-to-head result.
Interactive clinical-trial chart

Filter the evidence before comparing the percentage.

Every point remains attached to a named trial, duration, route, phase, population, statistical basis, and primary source. The chart describes separate records. It does not rank treatments.

15results shownPoint height uses the source's reported percentage, not a normalized treatment effect.
Phase 1Phase 2Phase 3Horizontal axis: weeks. Vertical axis: source-reported mean reduction or placebo-adjusted difference.
Clinical trial design comparison

Study context before outcome size.

This matrix uses the same filters as the chart. It exposes the current ClinicalTrials.gov enrollment, allocation, intervention model, masking, study status, and the maturity of the separate outcome source. These fields describe evidence context. They do not produce a quality score or treatment ranking.

Two records, two jobsThe outcome source supplies the plotted percentage. ClinicalTrials.gov supplies the current study-design snapshot. Registry enrollment can differ from a publication's analyzed population or an earlier sponsor report.
Selected evidence record

Retatrutide

TRIUMPH-1 · NCT05929066

28.3%Active-arm mean80 weeks · Efficacy estimand
Phase and route
Phase 3 · Weekly injection
Population
Adults with obesity or overweight and at least one complication
Participants
2,339 · Total randomized master-trial population
Registry enrollment
2,335 · actual · updated June 3, 2026
Study design
Randomized · Parallel assignment · Double masking
Comparator
2.2% mean reduction
Alternate analysis
25% · Treatment-regimen estimand
Current status
Investigational; not FDA approved

The 28.3% and 25.0% figures answer different analysis questions inside the same trial. Neither creates a head-to-head result against another program.

Two-drug comparison builder

Choose two results. Diagnose the comparison.

Select any two source records to see what actually matches, what differs, and whether the evidence shares randomization. The diagnostic never calculates a winner, a weekly rate, or an invented comparability score.

Separate trial programsNo randomized head-to-head trial

Two evidence records, no shared randomization.

No participant in the cited sources was randomized between CagriSema and Retatrutide. Identity, mechanism, route, trial design, and regulatory status can be compared. Subtracting percentages from separate studies would create a treatment effect the evidence did not test.

Treat percentages as separate source records. Do not subtract them, divide them into weekly rates, or use the larger value to name a winner.
First recordRetatrutide
28.3%

Active-arm mean at 80 weeks

Trial
TRIUMPH-1 · NCT05929066
Estimand
Efficacy estimand
Participants
2,339 · Total randomized master-trial population
Comparator
2.2% mean reduction
Second recordCagriSema
22.7%

Active-arm mean at 68 weeks

Trial
REDEFINE 1 · NCT05567796
Estimand
Trial-product estimand
Participants
3,417 · Total randomized trial population across four arms
Comparator
2.3% mean reduction
Randomization recordTRIUMPH-1 · NCT05929066REDEFINE 1 · NCT05567796Separate trials
Reported measure28.3% · Active-arm mean22.7% · Active-arm meanMatching basis label; estimands may still differ
Duration80 weeks68 weeks12-week difference
Development phasePhase 3Phase 3Matching phase label
Diabetes contextWithout diabetesWithout type 2 diabetesBroad diabetes context matches
Route and scheduleWeekly injectionWeekly injectionMatching route label
Study maskingDouble · Parallel assignmentQuadruple · Parallel assignmentDifferent design context
Outcome source maturitySponsor topline report · May 21, 2026Peer-reviewed publication · June 22, 2025Read peer review and sponsor reporting separately
Crawlable result ledger

Every visible point, with its comparison limits.

The table is the durable record behind the chart. It preserves active-arm means, placebo-adjusted differences, and alternate estimands as different fields.

ProgramTrialWeeksReported resultBasis and estimandPopulationSource
ZenagamtideAmycretin · NNC0487-0111First-in-human oral multiple-dose cohortPhase 1 · NCT05369390 · Completed · Daily oral12weeks13.1%Comparator: 1.1% mean reductionActive-arm meanSponsor-reported exploratory Phase 1 meanAdults with obesity or overweight16 participants · Active oral cohort onlyNovo NordiskSponsor presentation · March 2024
VK2735 injectionViking VK2735 · VENTURE injectableVENTUREPhase 2 · NCT06068946 · Completed · Weekly injection13weeks14.7%Comparator: 1.7% mean reductionActive-arm meanPeer-reviewed 13-week meanAdults with obesity or overweight and at least one complication176 participants · Total randomized trial populationPubMed / ObesityPeer-reviewed publication · January 8, 2026
VK2735 oralOral VK2735 · VENTURE-OralVENTURE-OralPhase 2 · NCT06828055 · Completed · Daily oral13weeks12.2%Comparator: 1.3% mean reductionActive-arm meanSponsor-reported 13-week meanAdults with obesity or overweight and at least one complication280 participants · Total randomized trial populationViking TherapeuticsSponsor topline report · May 12, 2026
PetrelintideZP8396 · long-acting amylin analogueZUPREME-1Phase 2 · NCT06662539 · Completed · Weekly injection42weeks10.7%Comparator: 1.7% mean reductionActive-arm meanEfficacy estimand, upper end of five dose-group estimatesAdults with obesity or overweight and weight-related complications493 participants · Total randomized trial populationRocheSponsor topline report · March 5, 2026
EnicepatideCT-388 · RO7795068 · RG6640CT388-103Phase 2 · NCT06525935 · Completed · Weekly injection48weeks22.5%Comparator: Not separately reportedPlacebo-adjusted differencePlacebo-adjusted efficacy estimateAdults with obesity or overweight and at least one complication469 participants · Total randomized dose-finding trial populationRocheSponsor topline report · January 27, 2026
EloralintideLY3841136 · selective amylin receptor agonistPhase 2 obesity trialPhase 2 · NCT06230523 · Completed · Weekly injection48weeks20%Comparator: 0.4% mean reductionActive-arm meanEfficacy estimand, rounded result for two dose strategiesAdults with obesity or overweight and at least one complication263 participants · Total randomized trial populationPubMed / The LancetPeer-reviewed publication · November 7, 2025
PemvidutideALT-801 · balanced GLP-1/glucagon dual agonistMOMENTUMPhase 2 · NCT05295875 · Completed · Weekly injection48weeks15.6%Comparator: 2.2% mean reductionActive-arm meanSponsor-reported 48-week meanAdults with obesity, or overweight plus a comorbidity391 participants · Total randomized trial populationAltimmuneSponsor topline report · June 23, 2024
EcnoglutideXW003 · Sciwind ecnoglutide · 埃诺格鲁肽SLIMMERPhase 3 · NCT05813795 · Completed · Weekly injection48weeks15.4%Comparator: 0.3% mean reductionActive-arm meanTreatment-policy estimandChinese adults with obesity or overweight664 participants · Total randomized trial populationSciwind BiosciencesSponsor topline report · March 6, 2026
MazdutideIBI362 · LY3305677GLORY-1Phase 3 · NCT05607680 · Completed · Weekly injection48weeks14.01%Comparator: 0.3% mean gainActive-arm meanPeer-reviewed trial meanChinese adults with obesity or overweight610 participants · Total randomized trial populationNew England Journal of MedicinePeer-reviewed publication · May 28, 2025
MariTidemaridebart cafraglutide · AMG 133Phase 2 dose-ranging studyPhase 2 · NCT05669599 · Completed · Monthly injection52weeks19.9%Comparator: 2.6% mean reductionActive-arm meanEfficacy estimand, upper end of the reported dose-group rangeAdults with obesity or overweight, without type 2 diabetes465 participants · Cohort A; 592 adults were enrolled across cohorts A and BAmgenSponsor topline report · June 23, 2025
MazdutideIBI362 · LY3305677GLORY-2Phase 3 · NCT06164873 · Active, not recruiting · Weekly injection60weeks16.65%Comparator: 1.5% mean reductionActive-arm meanPeer-reviewed analysis of participants receiving at least one doseChinese adults with moderate to severe obesity, with or without type 2 diabetes461 participants · Participants receiving at least one dose; the registry records 462 randomized participantsPubMed / JAMAPeer-reviewed publication · June 8, 2026
CagriSemacagrilintide plus semaglutide · REDEFINE 1REDEFINE 1Phase 3 · NCT05567796 · Active, not recruiting · Weekly injection68weeks22.7%Comparator: 2.3% mean reductionActive-arm meanTrial-product estimandAdults with obesity or overweight and at least one complication3,417 participants · Total randomized trial population across four armsPubMed / New England Journal of MedicinePeer-reviewed publication · June 22, 2025
CagrilintideAM833 · NNC0174-0833REDEFINE 1 monotherapy armPhase 3 · NCT05567796 · Active, not recruiting · Weekly injection68weeks11.8%Comparator: 2.3% mean reductionActive-arm meanTrial-product estimandAdults with obesity or overweight and at least one complication3,417 participants · Total randomized trial population; this row represents the cagrilintide armPubMed / New England Journal of MedicinePeer-reviewed publication · June 22, 2025
SurvodutideBI 456906 · GLP-1/glucagon dual agonistSYNCHRONIZE-1Phase 3 · NCT06066515 · Completed · Weekly injection76weeks16.6%Comparator: 3.2% mean reductionActive-arm meanEfficacy estimand, upper reported resultAdults with obesity or overweight726 participants · Actual enrollment in the completed trial recordPubMed / New England Journal of MedicinePeer-reviewed publication · June 7, 2026
RetatrutideLY3437943 · triple agonist · retaTRIUMPH-1Phase 3 · NCT05929066 · Completed · Weekly injection80weeks28.3%Comparator: 2.2% mean reductionActive-arm meanEfficacy estimandAdults with obesity or overweight and at least one complication2,339 participants · Total randomized master-trial populationEli Lilly and CompanySponsor topline report · May 21, 2026
Full pair evidence

Read the protocol behind commonly confused comparisons.

The builder diagnoses the selected trial rows. These permanent pair guides add mechanism, regulatory status, trial history, direct-versus-separate evidence, and source-by-source interpretation.

How to read the chart

Four fields that change what a percentage means.

  1. 01

    Duration

    A 12-week dose-finding signal and an 80-week pivotal result answer different questions. Dividing either result by weeks invents a linear rate the trials did not test.

  2. 02

    Result basis

    An active-arm mean is the observed or estimated mean for one group. A placebo-adjusted difference subtracts the comparator. Enicepatide is deliberately labelled differently in the chart.

  3. 03

    Estimand

    Efficacy, trial-product, treatment-policy, and treatment-regimen estimands handle adherence, prohibited treatment, and missing outcomes differently. Alternate estimates remain attached to the same record.

  4. 04

    Population and phase

    Diabetes status, complications, geography, sample size, dose escalation, and development phase affect interpretation. A small Phase 1 cohort does not carry the same certainty as a large pivotal trial.

Common comparison questions

Resolve the question before comparing the percentage.

Each answer resolves a naming or measurement error before sending the reader to the primary record.

01

Which experimental weight-loss drug reported the highest mean percentage in this chart?

Retatrutide's TRIUMPH-1 sponsor report lists 28.3% mean weight reduction at 80 weeks for the 12 mg group under an efficacy estimand. That is the highest plotted value in this selected dataset, but it is not proof that retatrutide is better than every other program. The trials used different durations, populations, doses, phases, statistical methods, and comparator responses.

02

Can I compare Retatrutide, CagriSema, MariTide, and Survodutide percentages directly?

You can compare how each result was reported, but you cannot treat the numerical gap as a head-to-head treatment effect. Retatrutide, CagriSema, MariTide, and Survodutide were randomized in separate protocols with different durations, populations, dose plans, adherence assumptions, missing-data rules, and placebo results.

03

Is Amycretin now called Zenagamtide?

Yes. Novo Nordisk now uses Zenagamtide for the program formerly called Amycretin. Both oral and injected formulations are in development. The 13.1% result plotted here came from a small 12-week oral Phase 1 cohort with 16 active participants, not from an approved weight-loss pill.

04

Is Cagrilintide the same as CagriSema?

No. Cagrilintide is a standalone amylin analogue. CagriSema is a fixed-dose combination of cagrilintide and semaglutide. REDEFINE 1 included separate randomized arms, so the combination's 22.7% trial-product estimate cannot be assigned to cagrilintide alone.

05

Which oral weight-loss drugs are included?

The chart includes the 12-week oral Zenagamtide, formerly Amycretin, Phase 1 cohort and the separate 13-week VK2735 oral Phase 2 trial. Both remain investigational. A short trial signal does not establish an approved tablet, long-term effect, final dose, safety profile, or superiority.

06

What is the difference between an active-arm mean and a placebo-adjusted result?

An active-arm mean describes the average change observed in an active treatment group. A placebo-adjusted result describes the difference between active treatment and placebo. Those are not interchangeable numbers. Enicepatide's 22.5% plotted value is placebo-adjusted, while most rows show an active-arm mean.

07

Why can ClinicalTrials.gov enrollment differ from the published participant count?

The registry is a living study record, while a publication or sponsor result may report a particular randomized population, cohort, or analysis set. This tool keeps the current registry enrollment and the outcome source's participant basis in separate fields so the two numbers are not mistaken for the same denominator.

08

How can I compare two weight-loss drug trial results fairly?

Start with whether the drugs shared randomization. Then compare the result basis, estimand, duration, phase, population, route, masking, and source maturity. The two-drug builder exposes those fields without subtracting percentages from separate trials or converting them into an invented weekly rate.

Open comparison data

Reuse the rows.
Keep the caveats.

The HTML landing page, CSV, and JSON distributions share the same 15 source-linked observations. Cite the landing page so definitions, corrections, and evidence limits travel with the numbers.

Primary source ledger

14 direct source routes.

Peer-reviewed publications are preferred when they contain the plotted analysis. Sponsor records are labelled when results have not yet been matched to a full publication.

Evidence checked July 21, 2026. Trial and regulatory records can change after publication.