GLP-1 Clinical Trial Tracker
33 published clinical trials across 11 GLP-1, GIP, glucagon and amylin class drugs report mean weight loss ranging from 7.9 to 28.7 percent, with the most recent readout from 2026.
These are published human clinical trial results, aggregated here as a neutral research reference. Where the trial sponsor reports it, figures reflect the efficacy (trial product) estimand, full adherence; the real world treatment policy estimand runs a few points lower. Some 2025 and 2026 readouts are sponsor toplines pending peer review, marked accordingly. This is not medical advice and not an endorsement: we sell research peptides, not these medicines.
Last updated: July 8, 2026
33
Trials tracked
11
Drug classes
7.9-28.7%
Weight loss range
2026
Latest readout
| Trial | Population | N | Weeks | Top dose | Status | Source | ||||
|---|---|---|---|---|---|---|---|---|---|---|
retatrutide GLP-1/GIP/glucagon triple agonist | TRIUMPH-4 | Obesity + knee osteoarthritis | 445 | 68 | 12 mg | 28.7% | 2025 | Phase 3 complete | Lilly PR 2025 (Dec 11)Topline | |
retatrutide GLP-1/GIP/glucagon triple agonist | TRIUMPH-1 | Obesity/overweight +comorbidity (no diabetes) | 2,339 | 80 | 12 mg | 28.3% | 2026 | Phase 3 complete | Lilly PR 2026 (May 21)Topline | |
tirzepatide GLP-1/GIP dual agonist | SURMOUNT-4 | Obesity (maintenance/withdrawal) | 670 | 52 | 10/15 mg (MTD) | 25.3% | 2023 | Approved | JAMA 2024 (Aronne) | |
retatrutide GLP-1/GIP/glucagon triple agonist | Phase 2 obesity dose-ranging (Jastreboff) | Obesity (non-diabetic) | 338 | 48 | 12 mg | 24.2% | 2023 | Phase 2 | NEJM 2023 (Jastreboff) | |
CagriSema amylin analog (cagrilintide) + GLP-1 RA (semaglutide) fixed-dose combination | REDEFINE 1 | Obesity/overweight +comorbidity (no diabetes) | 3,417 | 68 | 2.4 mg/2.4 mg | 22.7% | 2024 | Filed / NDA | NEJM 2025 (Garvey) | |
tirzepatide GLP-1/GIP dual agonist | SURMOUNT-1 | Obesity (non-diabetic) | 2,539 | 72 | 15 mg | 22.5% | 2022 | Approved | NEJM 2022 (Jastreboff) | |
tirzepatide GLP-1/GIP dual agonist | SURMOUNT-5 | Obesity (head-to-head vs semaglutide 2.4 mg) | 751 | 72 | 15 mg (MTD) | 20.2% | 2025 | Approved | NEJM 2025 (Aronne) | |
tirzepatide GLP-1/GIP dual agonist | SURMOUNT-3 | Obesity, post lifestyle lead-in | 579 | 72 | 10/15 mg (MTD) | 18.4% | 2023 | Approved | Nature Medicine 2023 (Wadden) | |
tirzepatide GLP-1/GIP dual agonist | SURMOUNT-OSA | Moderate-severe OSA + obesity | 469 | 52 | 10/15 mg (MTD) | 18.1% | 2024 | Approved | NEJM 2024 (Malhotra) | |
semaglutide GLP-1 receptor agonist | STEP 4 | Obesity (maintenance/withdrawal) | 803 | 68 | 2.4 mg | 17.4% | 2021 | Approved | JAMA 2021 (Rubino) | |
retatrutide GLP-1/GIP/glucagon triple agonist | TRANSCEND-T2D-1 | T2D (drug-naive) | 537 | 40 | 12 mg | 16.8% | 2026 | Phase 3 complete | Lilly PR 2026 (Mar 19)Topline | |
survodutide GLP-1/glucagon dual agonist | SYNCHRONIZE-1 | Obesity (non-diabetic) | 725 | 76 | 6.0 mg | 16.6% | 2026 | Phase 3 complete | Boehringer Ingelheim PR 2026Topline | |
semaglutide GLP-1 receptor agonist | STEP 3 | Obesity + intensive behavioral therapy | 611 | 68 | 2.4 mg | 16% | 2021 | Approved | JAMA 2021 (Wadden) | |
tirzepatide GLP-1/GIP dual agonist | SURMOUNT-2 | Obesity + T2D | 938 | 72 | 15 mg | 15.7% | 2023 | Approved | Lancet 2023 (Garvey) | |
CagriSema amylin analog (cagrilintide) + GLP-1 RA (semaglutide) fixed-dose combination | REDEFINE 2 | Obesity/overweight + T2D | 1,206 | 68 | 2.4 mg/2.4 mg | 15.7% | 2025 | Filed / NDA | Novo Nordisk PR 2025Topline | |
semaglutide (oral) GLP-1 receptor agonist (oral) | OASIS 1 | Obesity | 667 | 68 | 50 mg oral | 15.1% | 2023 | Approved | Lancet 2023 (Knop) | |
semaglutide GLP-1 receptor agonist | STEP 1 | Obesity | 1,961 | 68 | 2.4 mg | 14.9% | 2021 | Approved | NEJM 2021 (Wilding) | |
survodutide GLP-1/glucagon dual agonist | Phase 2 obesity dose-finding (le Roux) | Overweight/obesity (no diabetes) | 386 | 46 | 4.8 mg | 14.9% | 2024 | Phase 2 | Lancet Diabetes Endocrinol 2024 (le Roux) | |
mazdutide GLP-1/glucagon dual agonist | GLORY-1 | Chinese adults, obesity/overweight+comorbidity | 610 | 48 | 6 mg | 14.84% | 2025 | Approved (China) | NEJM 2025 | |
semaglutide GLP-1 receptor agonist | STEP-HFpEF | HFpEF + obesity | 529 | 52 | 2.4 mg | 13.3% | 2023 | Approved | NEJM 2023 (Kosiborod) | |
tirzepatide GLP-1/GIP dual agonist | SURPASS-2 | T2D (head-to-head vs semaglutide 1 mg) | 1,879 | 40 | 15 mg | 13.1% | 2021 | Approved | NEJM 2021 (Frias) | |
orforglipron oral small-molecule GLP-1 receptor agonist | ATTAIN-1 | Obesity (no diabetes) | 3,127 | 72 | 36 mg | 12.4% | 2025 | Filed / NDA | Lilly PR 2025 (Aug 7)Topline | |
cagrilintide long-acting amylin analog (monotherapy) | Phase 2 dose-finding (Lau) | Overweight/obesity | 706 | 26 | 4.5 mg | 10.8% | 2021 | Phase 2 | Lancet 2021 (Lau) | |
petrelintide long-acting amylin analog (monotherapy) | ZUPREME-1 (Phase 2b) | Overweight/obesity +comorbidity (no diabetes) | 493 | 42 | highest of 5 doses (mg not disclosed) | 10.7% | 2026 | Phase 3 ongoing | Roche PR 2026 (Mar 5)Topline | |
orforglipron oral small-molecule GLP-1 receptor agonist | ATTAIN-2 | Obesity + T2D | 1,600 | 72 | 36 mg | 10.5% | 2025 | Filed / NDA | Lilly PR 2025 (Aug 26)Topline | |
mazdutide GLP-1/glucagon dual agonist | DREAMS-3 | Chinese adults, early T2D + obesity (vs semaglutide) | 349 | 32 | 6 mg | 10.29% | 2025 | Phase 3 complete | Innovent PR 2025Topline | |
semaglutide GLP-1 receptor agonist | STEP 2 | T2D + overweight/obesity | 1,210 | 68 | 2.4 mg | 9.6% | 2021 | Approved | Lancet 2021 (Davies) | |
petrelintide long-acting amylin analog (monotherapy) | Phase 1b 16-week MAD | Overweight/obesity (no diabetes) | 48 | 16 | high dose (mg not disclosed) | 8.6% | 2024 | Phase 3 ongoing | Zealand Pharma PR 2024Topline | |
liraglutide GLP-1 receptor agonist | SCALE Obesity and Prediabetes | Obesity (no diabetes) | 3,731 | 56 | 3.0 mg | 8% | 2015 | Approved | NEJM 2015 (Pi-Sunyer) | |
orforglipron oral small-molecule GLP-1 receptor agonist | ACHIEVE-1 | T2D (monotherapy) | 559 | 40 | 36 mg | 7.9% | 2025 | Filed / NDA | Lilly PR 2025 (Apr 17)Topline | |
semaglutide GLP-1 receptor agonist | SELECT | CVD (no diabetes) - CVOT | 17,604 | 173 | 2.4 mg | n/a | 2023 | Approved | NEJM 2023 (Lincoff) | |
semaglutide GLP-1 receptor agonist | SUSTAIN-6 | T2D + high CV risk - CVOT | 3,297 | 104 | 1.0 mg | n/a | 2016 | Approved | NEJM 2016 (Marso) | |
survodutide GLP-1/glucagon dual agonist | Phase 2 MASH/fibrosis (Sanyal) | Biopsy-confirmed MASH, fibrosis F1-F3 | 293 | 48 | 6.0 mg | n/a | 2024 | Phase 2 | NEJM 2024 (Sanyal) |
Obesity + knee osteoarthritis
Obesity/overweight +comorbidity (no diabetes)
Obesity (maintenance/withdrawal)
Obesity/overweight +comorbidity (no diabetes)
Obesity (head-to-head vs semaglutide 2.4 mg)
Obesity, post lifestyle lead-in
Moderate-severe OSA + obesity
Obesity (non-diabetic)
Obesity + intensive behavioral therapy
Obesity/overweight + T2D
Overweight/obesity (no diabetes)
Chinese adults, obesity/overweight+comorbidity
T2D (head-to-head vs semaglutide 1 mg)
Overweight/obesity +comorbidity (no diabetes)
Chinese adults, early T2D + obesity (vs semaglutide)
Overweight/obesity (no diabetes)
Biopsy-confirmed MASH, fibrosis F1-F3
Of the drug classes tracked here, we carry next generation GLP-1, GIP, glucagon and amylin research peptides, including retatrutide and cagrilintide, for laboratory research use only.
First-ever triple-action weight management peptide targeting three receptors at once: GLP-1, GIP, and glucagon. Shown exceptional results in Phase 2 trials - up to 24% weight reduction. The most advanced metabolic peptide available.
Long-acting amylin analog studied for once-weekly satiety and appetite control. Phase 3 REDEFINE trials complete, NDA filed with FDA December 2025. A mechanism distinct from GLP-1 agonists.