Mazdutide
Tested in peopleIt has been tested in people, but it is not an approved medicine. The studies are usually small.
Also called IBI362 / LY3305677
A weight-loss drug in human trials, developed mainly for the Chinese market.
Can a doctor prescribe this?
No. Pharmacies are not on record as being allowed to make this into a medicine.
The FDA has not approved this as a medicine.
Investigational in the US. Not approved and not legal to compound.
Official status: Not on the 503A bulks list. Checked 2026-08-04.
Lab suppliers we list: 5
Doses used in research
Taken word for word from the studies and trials listed on this page. This is not a recommendation and not a dose for anyone to take.
In human trials
See source wording
under the skin · daily · for 12 weeks
Pre-hepatectomy Rehabilitation in Obese MASLD-Complicated Living Liver Donors With Mazdutide (PRIME)PHASE2, PHASE3 · NCT07718126
“The dosing schedule follows a 12-week step-up titration regimen starting at 2 mg q1w for Weeks 1-2, increasing to 4 mg q1w for Weeks 3-4 if gastrointestinal tolerated, and reaching a target dose of 6 mg q1w from Week 5 to Week 12 if gastrointestinal tolerated.”
3 mg
under the skin · weekly · for 52 weeks
ASCEND-1: Lifestyle Intervention Plus Mazdutide for Weight ManagementNA · NCT07517042
“Mazdutide is administered subcutaneously at 3.0 mg once weekly for 52 weeks during the weight maintenance period..”
See source wording
under the skin · weekly · for 24 weeks
A Study Comparing IBI362 vs Semaglutide in Chinese Adults With Early Type 2 Diabetes and ObesityPHASE3 · NCT06184568
“Once-weekly injections of gradually increased doses of IBI362, subcutaneously (SC),starting dose is IBI362 2.0 mg, continuous After 4 weeks of administration, increase to IBI362 4.0 mg.”
See source wording
under the skin · weekly · for 16 weeks
“Subjects switch from previous semaglutide 1.0 mg weekly to mazdutide 4 mg immediately, with no washout period.After 16-week initial treatment phase, subjects with \<30% reduction in liver fat content from baseline will have mazdutide dose titrated up to 6 mg weekly as per study protocol..”
See source wording
under the skin · weekly · for 24 weeks
Efficacy of Mazdutide for Treating PCOSPHASE1, PHASE2 · NCT06519656
“In the initial 4 weeks, the subjects are given Mazdutide 2mg once weekly.”
See source wording
under the skin · weekly
A Study of LY3305677 Compared With Placebo in Adult Participants With Obesity or OverweightPHASE2 · NCT06124807
“Participants received once-weekly subcutaneous Mazdutide with dose escalation until the target dose (3 or 6 mg) was achieved, starting at 1.5 mg from Weeks 0-3, followed by 3 mg from Weeks 4-31, then 6 mg from Weeks 32-48..”
See source wording
under the skin · every 4 weeks
Mazdutide as Adjuvant Therapy Following Sleeve Gastrectomy in Severe ObesityNA · NCT07135141
“The treatment begins with a starting dose of 2.0 mg, followed by a titration schedule increasing by 2.0 mg every 4 weeks (2.0 mg → 4.0 mg).”
See source wording
under the skin · weekly · for 4 weeks
Mazdutide for Adults With Prediabetes: A Randomized, Double-Blind, Placebo-Controlled Trial (DREAM-PRE)PHASE4 · NCT07654062
“Arm 1 (4 mg): titration from 2 mg QW (weeks 0-4) to 4 mg QW (weeks 5-24).”
See source wording
under the skin · weekly
GLP-1/GCG Dual Agonist in Type 2 Diabetes With Early Dementia (LIGHT-COG Study)PHASE3 · NCT07083154
“The starting dose is 2.0 mg administered once weekly (QW).”
See source wording
under the skin · weekly · for 4 weeks
Effect of Mazdutide on Coronary Plaque in Patients With Coronary Atherosclerosis and Overweight or ObesityPHASE4 · NCT07657676
“Mazdutide administered subcutaneously once weekly, starting at 2 mg for 4 weeks, then escalated to 4 mg for 4 weeks, and then to 6 mg thereafter until week 52..”
In animal studies
400 mcg/kg
mice · under the skin
Mazdutide Ameliorates Non-Alcoholic Fatty Liver Disease by Modulating Endoplasmic Reticulum StressJournal not recorded · 2026
“Methods: A NAFLD mouse model was induced by a 12-week high-fat diet, followed by a 4-week treatment with subcutaneous Mazdutide (100, 200, or 400 μg/kg).”
400 mcg/kg
mice · under the skin
Mazdutide Ameliorates Metabolic Dysfunction-Associated Steatotic Liver Disease by Modulating Endoplasmic Reticulum Stress, Improving Lipid Metabolism and Alleviating Inflammation.Pharmaceuticals (Basel, Switzerland) · 2026
“Methods: A MASLD mouse model was induced by a 12-week high-fat diet, followed by a 4-week treatment with subcutaneous Mazdutide (100, 200, or 400 μg/kg).”
- Mazdutide versus Semaglutide for the treatment of type 2 diabetes and obesity: Rationale, design and baseline data of DREAMS-3 phase 3 trial.
Study in people
Contemporary clinical trials · 2026
- Treatment With 9-mg Mazdutide for Weight Reduction in Chinese Adults With Obesity: The GLORY-2 Randomized Clinical Trial.
Study in people
JAMA · 2026
- Mazdutide 9 mg in Chinese adults with a body mass index ≥30 kg/m<sup>2</sup> but without diabetes: A phase 2 randomized controlled trial.
Study in people
Med (New York, N.Y.) · 2026
- Mazdutide versus dulaglutide in Chinese adults with type 2 diabetes.
Study in people
Nature · 2026
- Mazdutide reduces body weight in adults with overweight or obesity: A high-dose Phase 1 trial.
Study in people
Diabetes, obesity & metabolism · 2025
- Once-Weekly Mazdutide in Chinese Adults with Obesity or Overweight.
Study in people
The New England journal of medicine · 2025
- Efficacy and Safety of Mazdutide in Chinese Patients With Type 2 Diabetes: A Randomized, Double-Blind, Placebo-Controlled Phase 2 Trial.
Study in people
Diabetes care · 2024
- A phase 2 randomised controlled trial of mazdutide in Chinese overweight adults or adults with obesity.
Study in people
Nature communications · 2023
- Safety and efficacy of a GLP-1 and glucagon receptor dual agonist mazdutide (IBI362) 9 mg and 10 mg in Chinese adults with overweight or obesity: A randomised, placebo-controlled, multiple-ascending-dose phase 1b trial.
Study in people
EClinicalMedicine · 2022
- Mazdutide, a dual agonist targeting GLP-1R and GCGR, mitigates diabetes-associated cognitive dysfunction: mechanistic insights from multi-omics analysis.
Animal study, rats or mice
EBioMedicine · 2025
- Mazdutide Ameliorates Non-Alcoholic Fatty Liver Disease by Modulating Endoplasmic Reticulum Stress
Lab dish study
Journal not recorded · 2026
- Mazdutide Ameliorates Metabolic Dysfunction-Associated Steatotic Liver Disease by Modulating Endoplasmic Reticulum Stress, Improving Lipid Metabolism and Alleviating Inflammation.
Lab dish study
Pharmaceuticals (Basel, Switzerland) · 2026
- Mazdutide versus placebo in Chinese adults with type 2 diabetes.
Nature · 2026
- Treatment With 9-mg Mazdutide for Weight Reduction in Chinese Adults With Obesity: Research Summary.
JAMA · 2026
- Mazdutide and Orforglipron-New Evidence in Obesity and Diabetes.
JAMA · 2026
- Mazdutide: First Approval.
Drugs · 2025
- Review: Special Issue: <i>Real-world evidence on the use of GLP1 receptor agonists</i>: Emerging concepts in obesity management: focus on glucagon receptor agonist combinations.
Drugs in context · 2025
- Case Report: Efficacy and safety of dose-escalated Mazdutide, a GLP-1/GCGR dual agonist, in an adolescent with obesity, type 2 diabetes, and hyperuricemia.
Frontiers in endocrinology · 2025
- Once-Weekly Mazdutide in Obesity or Overweight.
The New England journal of medicine · 2025
- Patent landscape and therapeutic evolution of mazdutide: a dual GLP-1/Glucagon receptor agonist for obesity and type 2 diabetes.
Review of earlier work
Expert opinion on therapeutic patents · 2026
- Comparative Efficacy and Safety of Glucagon Receptor Agonists on Metabolic Outcomes: A Network Meta-Analysis of Randomised Controlled Trials.
Review of earlier work
Endocrinology, diabetes & metabolism · 2026
- Incretin-Based Dual and Triple Agonists in Overweight or Obese Individuals: A Systematic Review and Meta-Analysis.
Review of earlier work
Cardiology in review · 2026
- Efficacy and Safety of the Dual Glucagon-Like Peptide-1 and Glucagon Receptor Agonist Mazdutide in Predominantly Chinese Adults With Obesity and/or Type 2 Diabetes: A Systematic Review and Meta-Analysis.
Review of earlier work
Diabetes, obesity & metabolism · 2026
- Cardiovascular Effects of Glucagon Receptor Signaling Alone and Combined With Glucagon-Like Peptide-1 Receptor Signaling in Multiagonists: A Narrative Review With a Translational Focus.
Review of earlier work
Journal of the American Heart Association · 2026
- Efficacy and Safety of Mazdutide in Adults with Obesity or Overweight, With or Without Diabetes: A Bayesian Network Meta-Analysis
Review of earlier work
Journal not recorded · 2026
- Efficacy and Safety of Mazdutide in Managing Overweight and Obesity Among Non-Diabetic Adults: A Meta-Analysis of Randomised Controlled Trials.
Review of earlier work
Diabetes, obesity & metabolism · 2026
- A Clinical Comprehensive Evaluation of Long-Acting GLP-1 Receptor Agonists in Type 2 Diabetes Management.
Review of earlier work
Diabetes, metabolic syndrome and obesity : targets and therapy · 2026
- Beyond weight loss: multisystem benefits of obesity medications.
Review of earlier work
The lancet. Diabetes & endocrinology · 2026
- Efficacy of Mazdutide in Nondiabetic Adults with Overweight or Obesity: A Meta-Analysis
Review of earlier work
Journal not recorded · 2025
- Efficacy and safety of Mazdutide on weight loss among diabetic and non-diabetic patients: a systematic review and meta-analysis of randomized controlled trials.
Review of earlier work
Frontiers in endocrinology · 2024