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All Comparisons

Retatrutide vs Mazdutide

Research material comparison: purity standards, available formats, molecular data, batch COA documentation, and regulatory status. For in vitro research use only.

Retatrutide: BMazdutide: C
AttributeRetatrutideMazdutide
CategoryMetabolic / Triple AgonistMetabolic / Dual GLP-1/Glucagon Agonist
Evidence RatingBPhase III / NDA FiledCPhase I–II Clinical Trials
Clinical StatusPhase 3 clinical trials (Eli Lilly TRIUMPH program)Approved in China: June 2025 for chronic weight management, September 2025 for type 2 diabetes. Phase 2 trials running in the United States. Not approved outside China.
MechanismRetatrutide 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). This triple synergy combines reduced cal...Mazdutide is a fatty acid-acylated peptide that activates both the GLP-1 receptor and the glucagon receptor. The GLP-1 receptor agonism provides glucose-dependent insulin secretion, glucagon suppression, gastric emptying delay, and appetite reduction — the same mechanisms as other GLP-1 agonists. Th...
Half-Life~6 days (allows once-weekly dosing)Suitable for once-weekly dosing (exact value not fully published)
BioavailabilitySC injection
Molecular Weight~4233.7 g/mol
WADA StatusNot ProhibitedNot Listed
Research Half-Life~6 days (allows once-weekly dosing)Suitable for once-weekly dosing (exact value not fully published)
Key Use Cases
  • Weight Management
  • Metabolic Health
  • Weight Management
  • Metabolic Health
Safety Concerns
  • 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
  • Common: GI side effects including nausea, vomiting, diarrhea (similar to GLP-1 agonist class)
  • GI adverse events are dose-dependent and generally transient
  • Heart rate increase observed, consistent with GLP-1 agonist class effect
Contraindications
  • Not yet established -- product is investigational
  • Likely similar to GLP-1 class: personal/family history of medullary thyroid carcinoma, MEN2 (precautionary)
  • Pregnancy (based on GLP-1 class)
  • Monitoring recommended for muscle mass, bone density, GI motility per GLP-1 class concerns
  • Personal or family history of medullary thyroid carcinoma (class effect caution for GLP-1 agonists)
  • Multiple endocrine neoplasia syndrome type 2 (MEN2)
  • Known hypersensitivity to mazdutide
  • Pregnancy or breastfeeding (insufficient data)
Regulatory (US)Not FDA-approved. Phase 3 TRIUMPH program ongoing (Eli Lilly). TRIUMPH-4 reported 28.7% body weight loss at 12 mg over 68 weeks. Seven Phase 3 readouts expected in 2026. Regulatory submission expected 2026; approval anticipated 2027-2028.Not FDA-approved. Eli Lilly sponsored the first-in-human work as LY3305677 and US phase 2 trials are ongoing (NCT06124807, NCT06817356, NCT05623839). Innovent holds China rights and runs the IBI362 programme there.

Research Material Specifications

Catalog specifications for the corresponding research materials, including batch documentation coverage.

SpecificationRetatrutideMazdutide
Purity Standard≥98%≥98%
CAS Number2381089-83-2N/A
Molecular FormulaC₂₂₅H₃₄₈N₆₀O₆₈S₂N/A
Available Formats20mg, 10mg, 5mg, 30mg10mg
Batch COAs Published
Stock StatusIn stockOut of stock

Research Disclaimer: This comparison is provided for educational purposes only. All products are sold exclusively for in vitro research use. The information presented is based on published preclinical and clinical research and does not constitute medical advice. Consult a qualified healthcare professional before making any decisions regarding peptide use.

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