Retatrutide vs Survodutide
Head-to-head comparison of Retatrutide and Survodutide for research applications. Both peptides are studied for Weight Management and Metabolic Health, but they differ significantly in mechanism, evidence level, and dosing protocols.
Side-by-Side Comparison
| Attribute | Retatrutide | Survodutide |
|---|---|---|
| Category | Metabolic / Triple Agonist | Metabolic / Dual Agonist |
| Mechanism | Retatrutide simultaneously activates three receptors: GLP-1 (reduces appetite, slows gastric emptying, improves insulin secretion), GIP (enhances insulin sensitivity, glucose control), and glucagon (increases energy expenditure, fat oxidation, thermogenesis). | Survodutide simultaneously activates glucagon receptors (increasing hepatic fat oxidation, energy expenditure, and thermogenesis) and GLP-1 receptors (reducing appetite, slowing gastric emptying, improving insulin secretion). |
| Evidence Rating | B — Phase III / NDA Filed | B — Phase III / NDA Filed |
| Clinical Status | Phase 3 clinical trials (Eli Lilly TRIUMPH program) | Phase 3 clinical trials for MASH and obesity (Boehringer Ingelheim) |
| Safety Profile | GI side effects (dose-related, 13-63% across dose groups): nausea, vomiting, diarrhea, constipation; mostly mild to moderate; GI events partially mitigated with lower starting dose (2 mg vs 4 mg initial dose) | GI adverse events (nausea, vomiting, diarrhea) similar to other incretin-based therapies; Heart rate increases observed (class effect) |
| Route | Subcutaneous (clinical trial formulation only) | Subcutaneous |
| Dose Range | Phase 2 tested 1, 4, 8, 12 mg weekly SC; optimal dose being determined in Phase 3 | Phase 2 tested 0.3-6.0 mg weekly; optimal dose being determined in Phase 3 |
| Frequency | Once weekly | Once weekly |
| Molecular Weight | N/A | N/A |
| Half-Life | ~6 days (allows once-weekly dosing) | ~5-6 days (allows once-weekly dosing) |
Overview
Retatrutide and Survodutide are both research peptides studied across multiple applications. This comparison examines their mechanisms, evidence base, dosing protocols, and safety profiles to help researchers understand the key differences and overlaps.
Retatrutide — Mechanism & Evidence
Retatrutide is a first-in-class investigational triple hormone receptor agonist (GIP, GLP-1, and glucagon) developed by Eli Lilly. Multiple Phase 3 TRIUMPH trials are ongoing, with TRIUMPH-4 (Dec 2025) reporting average loss up to 71.2 lbs with osteoarthritis pain relief. Expected FDA approval is 2027-2028.
Key claims: Unprecedented weight loss in Phase 2; Phase 3 confirms efficacy with osteoarthritis benefit; Improves glycemic control in type 2 diabetes.
Survodutide — Mechanism & Evidence
Survodutide is an investigational dual glucagon/GLP-1 receptor agonist developed by Boehringer Ingelheim and Zealand Pharma. Unlike tirzepatide (GIP/GLP-1), survodutide combines glucagon and GLP-1 agonism, adding glucagon-driven hepatic fat oxidation and energy expenditure to GLP-1-mediated appetite suppression. It has shown particular promise for MASH (metabolic dysfunction-associated steatohepatitis), achieving MASH resolution in 83% of patients at the highest dose in Phase 2, and is in Phase 3 trials for both obesity and MASH.
Key claims: High rates of MASH resolution; Significant weight loss; Liver fat reduction.
Shared Research Applications
Both peptides are studied for: Weight Management, Metabolic Health.
Retatrutide is also researched for: no additional unique applications.
Survodutide is also researched for: no additional unique applications.
Safety Considerations
Retatrutide: GI side effects (dose-related, 13-63% across dose groups): nausea, vomiting, diarrhea, constipation; mostly mild to moderate GI events partially mitigated with lower starting dose (2 mg vs 4 mg initial dose) Dose-dependent heart rate increases peaking at 24 weeks, declining thereafter
Survodutide: GI adverse events (nausea, vomiting, diarrhea) similar to other incretin-based therapies Heart rate increases observed (class effect) Dose-dependent tolerability — titration essential
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Quality Documentation
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Product cards on this page link to current catalog entries and available quality documentation.
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